Specific adaptation of barley varieties in different locations in Ethiopia

Barley is one of the most important cereal crops grown for the livelihoods of the poor farmers of Tigray region in northern Ethiopia. As many low input and marginal environments it has benefited less from the yield increases achieved by modern breeding. This has been largely attributed due to genotype × environment intraction (GEI). To investigate the causes of GEI, ten barley varieties including local checks (two farmers developed varieties, four modern varieties and three rare local varieties) were tested over 21 environments. Participatory methods were applied to sample an adequate number of environments spanning the regional diversity. The yielding ability and stability of the varieties was graphically depicted by GGE and PLSR biplot. There were two major groups of environments, the central and northern highlands, the latter with less rainfall and poorer soils. Rainfall per month and total nitrogen level were the environmental variables that differentiated these two groups. In Tigray, rainfall in June and July were negatively correlated with yield, reflecting waterlogging problems. The different varieties were either specifically or widely adapted across the two environments. The variety ‘Himblil’, originating in Tigray, was the highest yielding and also most stable in the region of origin. However, it was inferior to improved varieties (Shege and Dimtu) at high yield levels. The association of earliness with grain yield indicates that the trait can be effectively manipulated within the existing materials. We recommend breeding for drought/water logging resistance based on selection in the target environment as the best strategy to provide stable and high yielding varieties for Tigray.     

GGE Biplot Analysis of Genotype by Environment Interaction in Field Pea (<Emphasis Type="Italic">Pisum sativum</Emphasis> L.) Genotypes in Northwestern Ethiopia

Ten field pea genotypes were evaluated in randomized complete block design with four replications for three consecutive years (2010-2012) main cropping seasons at four locations in each year. The objectives were to determine magnitude of genotype by environment interaction and to identify stable field pea genotype with high grain yield to be released as a cultivar to producer for Northwestern Ethiopia. The GGE [genotype main effect (G) and genotype by environment interaction (GE)] biplot graphical tool was used to analyze yield data. The combined analysis of variance revealed a significant difference (P<0.01) among genotypes, environments and genotype-by-environment interaction for grain yield. The average environment coordinate biplot revealed that EH99005-7 (G2) was the most stable and the highest yielding genotype. Polygon view of GGE-biplot showed the presence of three mega-environments. The first section includes the test environments E1 (Adet 2010), E3 (Debretabor 2010), E5 (Adet 2011), E6 (Motta 2011), E7 (Debretabor 2011), E8 (Dabat 2011), E9 (Adet 2012) and E12 (Dabat 2012) which had the variety G1 (EH99009-1) as the winner; the second section contains the environments E4 (Dabat 2010), E10 (Motta 2012) and E11 (Debretabor 2012) with G2 as the best grain yielder and the third section contains the E2 (Motta 2010) with G4 (Tegegnech X EH90026-1-3-1) as the best grain yielder. The comparison GGE- biplot of field pea genotypes with the ideal genotype showed that G2 was the closest genotype for the ideal cultivar. Among the twelve environments, E2, E6 and E10 were more discriminating and E3, E9 and E12 were less discriminating. Genotype EH99005-7 was the most stable and the highest yielding genotype. As a result it is released officially for Northwestern Ethiopia. Therefore, it is recommended to use genotype EH99005-7 for wider cultivation in Northwestern Ethiopia and similar areas.     

Stability of 1000-grain weight and its relation with other traits of barley in dry areas

Summary The effects of 1000-grain weight, its stability and the correlation coefficients with other traits of 50 barley varieties were studied at 18–20 environments. Additional material was used to study genotypic correlations among traits. Significant differences in stability of 1000-grain weight were found among varieties. Two-row varieties were on average more stable than 6-row varieties. The 1000-grain weight was among the most stable and grain yield the most variable traits. This was discussed in connection with stem reserves translocation to the grain. Consistently high yielding varieties had around average stability of 1000-grain weight. Regression coefficient, b, for 1000-grain weight was positively correlated with variance of log transformed data, both valid estimates for stability of 1000-grain weight. The correlation coefficient of 1000-grain weight with grain yield was positive or non-significant, with number of grains per tiller mainly negative and with volume weight it was positive. In 6-row barley, 1000-grain weight was positively correlated with grain yield, straw yield, total biological yield, and plant height, and negatively with number of tillers per m² and number of grains per tiller.     

不同类型啤酒大麦品种遗传多样性及遗传差异的SSR分析

利用28对SSR引物对包括22份野生材料,8份耐盐碱材料,21份优质高产甘啤系列品种(系)材料和9份日本早熟材料在内的60份啤酒大麦品种资源的遗传多样性及其亲缘关系进行分析。结果表明,所用28对引物,有25对有多态性;聚类结果表明这些材料遗传相似系数分布在0.4792~0.9948之间。在遗传相似系数0.63的水平上,这些材料聚类为2大类,下分7个亚类。从聚类结果看出,不同类型材料基本各自聚为一类,表明不同类型品种(系)内遗传差异较小;不同类型品种(系)间遗传差异较大,杂交可能会产生较强的杂种优势和较高的产量潜力。     

龙岩适应性烤烟品种(系)评价筛选

为准确、客观地筛选出适宜龙岩烟区种植的优良烤烟品种（系）,联用方差分析、AMMI模型和GGE双标图3种方法对‘闽烟35’、‘C2’、‘FL88f’、‘翠碧1号’、‘闽烟38’、‘闽烟57’、‘F31-2’、‘FL25’和‘云烟87’等9个烤烟品种（系）连续2年的经济性状和品质性状的多目标决策值进行分析评价。结果表明,龙岩烤烟品种（系）的经济、品质性状表现主要受品种效应影响,其次是品种×地点互作效应。其中,‘FL88f’经济性状丰产性表现最好,显著优于‘云烟87’,稳定性较好且适应性强;品质性状的丰产性、稳定性和适应性均较好,稍优于‘云烟87’。因此,综合经济性状和品质性状表现,品系‘FL88f’可以作为龙岩烟区的后备品系,建议审定后应用。     

Analysis of the genotype-by-environment interaction of spring barley tested in the Nordic Region of Europe: Relationships among stability statistics for grain yield

Variation in agronomic and quality characteristics was investigated in 220 Nordic spring barley cultivars across distinct environments (6 locations during 3 years) in the Nordic Region of Europe. The objectives of this research were to determine the importance of the genotype by environment interaction in all characteristics evaluated and to establish the relationship among different stability statistics for grain yield. Combined analysis of variance across locations indicated that both environments and genotype by environment interactions influenced significantly the cultivar phenotypes for all characteristics, irrespective of their type (row number) or earliness. The first two interaction principal component axes of the additive-main-effects-and-multiplicative-interaction (AMMI) model accounted together between 35% and 75% of the total genotype-by-environment interaction for all characteristics. Grain yield was, on average, higher in 2-row than in 6-row cultivars, which were significantly earlier in heading and grain maturity than the former. However, in some of the most northern locations, 6-row barley cultivars significantly outyielded on average 2-row barley lines. The genotype by location interaction variance (σ² _GL) accounted by each genotype was significantly associated to the deviation from regression (Tai's λ) while the coefficient of regression (β) was significantly correlated to the IPCA1 and IPCA2 of the AMMI model in 2-row, 6-row and early barley cultivars. This revised version was published online in August 2006 with corrections to the Cover Date.     

Breeding and brewing quality of the Canadian malting barley variety ‘CDC Goldstar’ lacking lipoxygenase-1

Various types of malt quality profiles have been investigated to benefit the North American brewing industry. Herein, we report the development and brewing quality of the hulled, two-row malting barley (Hordeum vulgare L.) variety ‘CDC Goldstar’ lacking lipoxygenase-1 (LOX-1-less). This new variety offers a novel malt type for the improvement of beer flavor stability. The agronomic performance of ‘CDC Goldstar’ was tested in the Western Cooperative Two Row Barley Registration Trials during 2013–2014. In addition to high lodging tolerance, the new variety showed 6% higher yield than the current leading variety ‘CDC Copeland’. The malt quality of ‘CDC Goldstar’ showed higher diastatic power and lower wort β-glucan content than ‘CDC Copeland’ and controllable proteolytic modification (soluble nitrogen and Kolbach Index). Pilot- (100 L) and commercial-scale (5,000 L) brewing trials were conducted using ‘CDC PlatinumStar’, another LOX-1-less variety with a low enzymatic profile, as the control variety. Absence of the LOX-1 trait from ‘CDC Goldstar’ maintained trans-2-nonenal levels in aged beers as low as those in other LOX-1-less varieties without affecting major beer parameters, such as ester and aldehyde content or foam stability. The newly developed ‘CDC Goldstar’ malting barley provides added value for the beer industry and consumers.     

双标图分析在农作物品种多点试验中的应用

双标图分析越来越多地被用于直观分析农作物品种多点试验数据和其他类型的两向数据。这种方法深受植物育种家和农业研究人员的推崇, 认为它可以提高研究者理解和驾驭试验数据的能力;但也受到一些学者的批评, 认为它是统计分析方面的旁门左道。事实上,学术界对什么是双标图的认识尚存混乱。一些双标图的使用者并不总能正确地选择和解释双标图。一些双标图的批评者对双标图分析及其研究对象也缺乏深入了解。为使研究者对双标图分析有一个客观全面的认识, 本文就用双标图分析农作物品种多点试验中的几个问题进行阐述：(1) 如何针对特定的研究目的选择适当的双标图; (2) 如何选择适当的GGE双标图来分析多点试验数据; (3) 如何使用GGE双标图的不同功能形态进行品种评价、试验点评价和品种生态区划分; (4) 如何判断双标图是否充分表现试验数据中的规律; (5) 如何检验双标图显示的结果是否显著。     

Seed yield in perennial ryegrass (<Emphasis Type="Italic">Lolium perenne</Emphasis> L.): comparative importance of component traits and detection of seed-yield-related QTL

The aims of our study were to evaluate relationships amongst morphological traits associated with seed production in a perennial ryegrass biparental population and to identify genomic regions associated with phenotypic variation in those traits using QTL analysis. This was achieved using data from two field experiments at Palmerston North and Lincoln, New Zealand, in 2003, and days to heading (DTH), reassessed in 2004. Trait association was determined for the Palmerston North experiment where measured traits included seed yield per plant (SYPlant), seed yield per spike (SYSp), reproductive tiller number (RTiller), spikelets per spike (SpktSp), florets per spikelet (FSpkt), 1000 seed weight (TSW), spike length (SpLen), florets per spike (FSp), floret site utilization (FSUtil), spread of heading (SOH) and plant growth habit (PGHabit). Traits contributing to SYPlant in order of descending value were FSpkt, FSUtil, and RTiller. High TSW was only weakly linked to SYPlant. FSUtil, SOH and RTiller were identified as valuable breeding targets for improving seed yield potential in perennial ryegrass. QTL were identified for all traits except for RTiller. QTL for SYPlant occurred on linkage groups (LG) 2 and 6. Both were co-located with QTL for SYSp and sets of SYPlant components or related traits (FSpkt, FSp; FSUtil and TSW). Major QTL for DTH were identified on LG2 and LG4 and minor QTL on LG7 in consecutive years. There was a strong genotype-by-environment interaction for SYPlant that was reflected in a lack of consistent QTL across environments, while QTL for SYSp and DTH were stable across environments. Identification of component traits and QTL important for seed yield may accelerate genetic improvement in perennial ryegrass through conventional and marker-assisted breeding, respectively.     

The stability of the number of tillers of barley varieties and its relation with consistency of performance under semi-arid conditions

Summary In 1981/82 60 barleys varieties were grown at 18 environments (three locations, three seed rates, two soil fertility regimes) and in 1982/83 22 varieties were grown again at 21 environments (seven locations, three seed rates). Grain yield was recorded only in the second year. The estimates of variances s_x ² (untransformed data) and s² _logx (transformed data) for number of tillers and grain yield varied significantly among varieties. When untransformed data were used, high tillering varieties had a higher variance for number of tillers per unit area than low tillering varieties. When the variation was measured by CV of untransformed data or by s² _logx on transformed data a reverse relation occurred, i.e. the correlation coefficient between number of tillers and the variation of number of tillers was negative.High grain yielding varieties had a high mean number of tillers and a low variance for number of tillers per unit area when transformed data were used to compute variances. All interactions between variety, seed rate and location for grain yield were significant. The regression analysis of variety grain yield (Y) on environment mean grain yield (X) gave regression coefficients, b, ranging from 0.51 to 1.69. There was no significant correlation between regression coefficient and grain yield. The highest yielding varieties had b values around 1.0. High grain yielding varieties had low variance of yield over environments and low values for deviations from the regression when transformed data were used. However, the correlations between mean yield and variance for yield or mean yield and deviations from regression were positive when untransformed data were used.From this study it is concluded that high mean number of tillers per unit area and low variance for number of tillers could be used in selecting varieties with consistently high yield at varying environments. Techniques are proposed for application early in the breeding programme, i.e. in segregating population or in nurseries.     

基于GGE双标图的高粱品种农艺性状和稳产性分析

为了筛选丰产稳产、适应性强的高粱新品种,促进辽西地区高粱产业健康可持续发展。2019-2020年采用随机不完全区组设计（alpha-格子设计）,通过R语言GGE双标图分析了30个高粱品种的产量和相关农艺性状。方差分析表明,年份、基因型、基因型与年份互作对高粱产量和相关农艺性状均有显著影响（P<0.05）,其产量变异的平方和占总平方和的比例分别为32.1%、41.3%和11.3%,基因型效应对产量和相关农艺性状的变异贡献率最大,株高和穗长指标遗传力较大。GGE双标图分析表明,辽杂19号、平试13和济粱2丰产稳产性较好;辽杂19号和平试13在株高、产量、穗重和穗粒重方面综合性状表现较好;辽杂19号距离“理想品种”最近,其次为平试13。皮尔逊相关分析表明,高粱籽粒产量与株高、穗重、穗粒重和穗粒数均呈极显著正相关（P<0.01）。从参试品种看,辽西半干旱地区高秆品种比矮秆品种更具产量优势。在朝阳地区,辽杂19号、平试13和济粱2具有较高的产量和稳定性。在特定生态区域,基因型是产量和相关农艺性状差异的主要因素。     

Evaluation of genotype, environment, and genotype-by-environment interaction for capsaicinoids in Capsicum annuum L.

The response, in terms of capsaicinoid content, of chile (Capsicum annuum L.) genotypes to different environments was studied. Double haploidlines, an F₁ hybrid, and an open-pollinated cultivar estimated the genotype, environment, and genotype-by-environment interaction effect on the total capsaicinoids and on individual capsaicinoids. Significant differences were observed among the genotypes and among genotype-by-environment interactions over the environments. Among the genotypes in an environment, the within-genotype variances were also significantly different. The double haploid line, HDA 207, had low within-genotype variance for individual and total capsaicinoids, with the exception of the isomer of dihydrocapsaicin. Also for HDA 270, the genotype-by-environment interaction was negligible for individual and total capsaicinoids, Indicating stability across environments. This revised version was published online in July 2006 with corrections to the Cover Date.     

Application of quantitative trait locus mapping to the development of winter-habit malting barley*

Malting quality and winter-hardiness in barley are ‘ultimate’ phenotypes composed of constituent quantitatively inherited traits. A synthesis of molecular-marker linkage data and field phenotyping to reveal the location of quantitative trait loci (QTL) may assist in the development of winter-habit malting barley varieties. One-hundred doubled haploid progeny from a winter x spring cross were evaluated under fall and spring-planted conditions. Malting quality phenotypes and a 76-point map were used to identify QTL and to assess the effect of spring-and autumn-sowing on QTL expression. Many QTL effects were common to both environments and corresponded to QTL detected in other barley germplasm. While there were significant differences in the magnitude of effects across environments, there were no changes in the favourable allele phase. QTL effects for grain protein and diastatic power level coincided with the locations of known function genes. Coincident QTL for a number of mailing-quality traits on chromosome 7 suggests either the presence of a multi-locus cluster of genes controlling components of malting quality or a regulatory gene or genes controlling the cascade of enzymatic processes that function during the malting process. Based on these results, simultaneous selection for malting quality and cold tolerance should be possible in this genetic background.     

Yielding ability, yield stability, and quality of exotic durum wheat germplasm in Sicily

A set of 20 accessions of durum wheat (Triticum turgidum L., durum group), which mostly included exotic landraces from various Mediterranean countries, and four Italian improved varieties were evaluated for grain yield in five environments and for quality traits in two environments of Sicily. Glutenin composition was also assessed electro-phoretically on six seeds per entry. The cultivars differed (P ≤ 0.01) for yield, protein content and sodium dodecyl sulphate (SDS-sed) sedimentation volume, in the presence of significant (P ≥ 0.001) genotype-environment interaction effects. These effects were large for yield and moderately large for protein content relative to genotype main effects following estimation of variance components. Most exotic cultivars yielded comparably with, and some of them showed greater stability than, the best yielding Italian variety 'Simeto. Some exotic cultivars combined outstanding yield, protein content and SDS-sedimentation values and represent therefore extremely valuable germplasm sources to broaden the local genetic base. The glutenin composition LMW-2 and HMW 7 + 8 was positively associated with gluten quality. Six entries showed heterogeneous electrophoretic patterns, suggesting the presence of different genotypes within the cultivar.     

The relation between grain yield and some related traits of spring barley (Hordeum vulgare L.) and their usefulness in a breeding program

Summary The objective of this study was to evaluate traits which can facilitate and improve selection for grain yield of spring barley. Five experiments were conducted in different environments to measure grain yield and yield related traits of breeding lines and exotic varieties. Differences for rate of canopy expansion were significant and offer the opportunity to select for a high weed suppressing potential but there was no relation to grain yield. Dry matter yield/m² at anthesis and its water-soluble-carbohydrate content were not correlated with grain yield/m² and number of grains/m². Variation in biomass among breeding lines with a similar development and plant height was small. Biomass standardized for plant height was stable across environments and showed a good correlation with number of grains and grain yield. The contribution of pre-anthesis assimilation to grain yield was only important under low yielding experimental conditions, but the differences among the genotypes for this trait were inconsistent. It may be difficult to select genotypes with a high potential contribution of pre-anthesis assimilation to grain yield.     

Inheritance of (1–3)(1–4)-beta-D-glucan content in barley (<Emphasis Type="Italic">Hordeum vulgare</Emphasis> L.)

β-glucan is the soluble dietary fiber component and occurs at its highest in barley. This study aims to evaluate the inheritance of β-glucan content in barley grains and to map quantitative trait loci (QTL) associated with this trait. F₅-derived 107 lines from the cross of the six-rowed waxy hulless barley, ‘Yonezawa Mochi’ and the six rowed non-waxy hulless barley,’ Neulssalbori’ were measured for their agronomic traits and β-glucan level at four different environments. These recombinant lines showed significant genotypic variation (P < 0.01) and normal distribution for β-glucan content with a range of 43.6–62.1 g kg⁻¹ across environments. A significant genotype-by-environment interaction was also found. The broad-sense heritability estimates for β-glucan content ranged from 0.42 to 0.82 across environments. Using one-factor analysis and composite interval mapping, a main effect of QTL associated with β-glucan content was identified in the genomic region near waxy gene (wx) and HVM4 on chromosome 7H. The major QTL at this region explained on average 44.4% of the variation for the mean of β-glucan content across environments with LOD values that ranged from 5.7 in Suwon in 2001 to 13.9 in Suwon in 2003. Two minor QTLs were identified but their significance of association with β-glucan content was inconsistent across environments.     

Components of Response in Barley Anther Culture

Anther culture response with 17 widely-grown varieties and one model variety of barley was studied with one replication from field-grown donor plants and one replication from a growth-chamber. Plants were regenerated from all 18 varieties and green plants were obtained from 16 of them. On average, 1.6 green plants were obtained per 100 cultured anthers from all the material. Estimated variance components for the formation of embryos/callus from the anthers were dominated by the effects of the genotypes and interactions between plant material and environments which together accounted for 60.1 and 17.0 % of the total variation respectively, while environments were nonsignificant for this character. Plant regeneration from embryos/callus were not significantly influenced by either genotype or environments. Components of variance for green plant formation were dominated by the effects of the genotypes, accounting for 73.2 % of the total variation, and a smaller effect from environments accounting for 11.2% of the total variation. Main effects from genotypes on the percentage of green regenerants divided 7 varieties into two distinct groups, indicating that major genetic factors were involved. The genetic basis for green plant regeneration seems different from that governing embryo formation. The results are discussed with respect to the possible prediction of anther culture response for new barley hybrids, as a means for directing the use of barley anther culture towards material that responds well.     

基于GYT双标图对西北内陆棉区国审棉花品种的分类评价

西北内陆棉区是我国最重要的主产棉区,对该棉区历年国审棉花品种进行科学分类和综合评价有利于国审品种资源的合理利用和棉花生产效率的提升。本研究采用GYT双标图分析对2003—2019年期间西北内陆棉区37个国审棉花品种的产量与霜前花率、纤维长度、比强度、马克隆值、枯萎病指数和黄萎病指数等性状的组合水平进行了综合分析和品种分类评价。结果表明,西北内陆棉区37个国审棉花品种可划分为3个特征明显的品种类型。其中,I型品种包括新陆早13号、中棉所49、新陆早21号、巴13222、新46、天云0769、Z1112、新石K18、J206-5、新石K21、禾棉A9-9、创棉508、H33-1-4、金科20、新K28、创棉512和J8031等17个品种,是产量与其余性状组合协调最好的品种类型,在生产上推广应用价值最高。II型品种产量和纤维品质表现一般,抗病性差,在当前生产上应用价值有限。III型品种的抗枯萎病性表现最好,但在其余性状上表现略差,综合生产应用价值有限,也许可作为抗病亲本应用。同时,根据各品种的理想指数筛选出创棉512、J8031、新K28、H33-1-4、金科20、新陆早13号和创棉508等综合表现优良的品种,也鉴别出新陆棉1号、新陆早33号、创棉501号和新陆早51号等综合表现相对略差的品种。本研究采用的GYT双标图分析方法是基于“产量-性状”组合水平对品种进行综合评价和分类研究,产量-性状组合之间的相关关系更加简单,多数组合间表现显著正相关,更适用于品种的多性状直观选择和综合评价,通常比先前的GT双标图解释的变异比率高,双标图模型拟合度更好,结果更可靠。本研究采用GYT双标图分析方法对西北内陆棉区国审品种的分类研究揭示了该棉区国审棉花品种的分类特征和应用价值,为本区的国家棉花品种试验审定提供了借鉴,也为其他作物品种的类似研究提供了范例。     

Genotype by environment interactions (GEIs) for barley grain yield under salt stress condition

Changes in the relative genetic performance of genotypes across environments are referred to as genotype × environment interactions (GEIs). GEIs can affect barley breeding improvement for salt tolerance because it often complicates the evaluation and selection of superior genotypes. The present study evaluated the GEIs over 60 barley genotypes for yield components and grain yield in six salinity environments in North Delta, Egypt. Data were analyzed using the additive main effects and multiplicative interaction (AMMI) and Tai’s stability parameters. GEIs effects on yield explained 20.3, 20.1, 14.6, and 33.0% of the total variation besides, the first two principal components account for 67.3, 56.3, 64.3, and 83.7% of the explained variance in the four sets, respectively. Six genotypes namely G-4, G-7, G-20, G-34, G-36, and G-39 were found to be most stable and high yielding across environments (GY >2.00 t ha^-1), and located close to zero projection onto the AEC ordinate. Tai’s stability parameters demonstrated that these genotypes were more responsive to the environmental changes. The genotypes G-50 and G-53 showed perfect/static stability (α = -0.95, -0.91, respectively). In contrast, the genotype; G-36 had α = 0 and λ = 1.10, indicating parallel with the environmental effects followed by G-44. Overall, we found that GEIs for grain yield are highly significant in all sets, suggesting that responded differently across environments. This interaction may be a result of changes in genotypes’ relative performance across environments, due to their differential responses to various abiotic factors.     

应用GGE双标图分析甘蔗品种(系)的产量和品质性状

采用GGE双标图分析7个甘蔗参试品种在7个试点的产量和品质性状。结果表明, 云蔗05-51(YZ05-51)为单茎产量高且稳定性强的品种, 福农39(FN39)和柳城03-1137(LC03-1137)的单茎产量较高, 但稳定性较差; 福农38 (FN38)、粤甘35 (YG35)和新台糖22 (ROC22)有效茎数较高, 但稳定性较差; 福农39 (FN39)和云蔗05-51 (YZ05-51)为蔗茎产量较高且稳定性强的品种, 福农38 (FN38)和柳城03-1137 (LC03-1137)蔗茎产量高, 但稳定性较差; 福农39 (FN39)和赣南02-70 (GN02-70)为甘蔗蔗糖分较高且稳定性强的品种, 云蔗05-51 (YZ05-51)和福农38 (FN38)甘蔗蔗糖分较高, 但稳定性较差; 福农39 (FN39)为产糖量较高且稳定性较强的品种, 福农38(FN38)、云蔗05-51 (YZ05-51)和柳城03-1137 (LC03-1137)的产糖量较高、但稳定性较差。云南瑞丽和云南临沧2个试点单茎产量的代表性和区分力较强; 云南保山和广西来宾2个试点有效茎数的代表性和区分力较强; 广西崇左和云南临沧2个试点蔗茎产量的区分力较强; 广西百色和柳州2个试点甘蔗蔗糖分的区分力较强; 广西百色和云南临沧2个试点产糖量的区分力较强。