2004年江西省审定通过的水稻品种

1.赣早籼56号江西农业大学农学院选育的常规早稻品种 ,品种来源 :中优早3号/浙9248。全生育期116.9天 ,株高93.1cm。食用品质优。稻瘟病抗性自然诱发鉴定 :苗瘟0级 ,叶瘟0级 ,穗瘟0级。2002～2003年参加江西省水稻区试 ,2002年平均单产415.37kg/667m2,2003年平均单产446.43kg/667m2。适宜赣中南地区种植。2.赣早籼57号广丰县农业技术推广站选育的常规早稻品种 ,品种来源 :“赣早籼26号”变异单株系统选育而成。全生育期111.0天 ,株高93.2cm。稻瘟病抗性自然诱发鉴定 :苗瘟0级 ,叶瘟2级 ,穗瘟0级。2002～2003年参加江西省水稻区试 ,2002年平…     

2003年江西省审定通过的水稻品种

1.赣早籼53号江西省农业科学院原子能应用研究所通过“M90503”与“26-44”杂交选育的常规早稻品种。全生育期110.9天 ,株高87.82cm。病区自然诱发鉴定稻瘟病抗性 :苗瘟4级 ,叶瘟3级 ,穗颈瘟5级。2001～2002年参加江西省水稻区试 ,2001年平均单产406.62kg/667m2,比对照赣早籼40号增产7.65 % ;2002年平均单产426.55kg/667m2 ,比对照赣早籼40号增产1.8%。适宜在赣中北地区种植。2.赣早籼54号江西农业大学农学院通过“望稻1号”与“浙9248”杂交选育的常规早稻品种。全生育期111.4天 ,株高87.08cm。病区自然诱发鉴定稻瘟病抗性 :苗瘟0级 ,叶瘟…     

江西省2000年审定通过的水稻新品种

(1 )赣早籼 47号　系抚州地区农科所、中国科学院遗传研究所、抚州地区种子公司育成的早稻新品种。全生育期 1 0 8天 ,株高 83 cm。分蘖力中等 ,结实率 72 % ,千粒重 2 5.7g。稻瘟病抗性苗瘟 0级 ,叶瘟 2级 ,穗瘟 0级。 1 998～ 1 999年参加江西省区试 ,平均单产 340 .6 kg/667m2 ,比对照品种赣早籼 37号增产显著。适宜赣中、赣北地区作早稻种植。(2 )赣早籼 48号　系芦溪县农业局、芦溪县农科所育成的早稻新品种。全生育期 1 1 1天 ,株高 90 cm,株型松散适中 ,茎秆粗壮 ,剑叶上挺 ,结实率 74% ,千粒重 2 5.8g。稻瘟病抗性苗瘟 0级 ,叶瘟 3…     

湖南省2001年审（认）定通过的水稻新品种

１.湘早籼３２号原名丰优早１２号 ,系湖南省水稻研究所育成。１９９９年、２０００年参加省区试 ,两年平均单产４５１．４ｋｇ／６６７ｍ２,比对照湘早籼１３号增产６．２%。全生育期１０６天。稻米外观品质一般 ,蛋白质含量较高。经鉴定 ,易感稻瘟病和白叶枯病。２.湘早籼３３号原名９７早２０,系湖南农业大学水稻研究所育成。１９９９年、２０００年参加省区试 ,两年平均单产４５３．６ｋｇ／６６７ｍ２,比对照湘早籼１３号增产６．７%。全生育期１０８天。稻米外观品质一般 ,蛋白质含量较高。经鉴定 ,易感稻瘟病 ,中抗白叶枯病。３.中９…     

2000年福建省审定通过的水稻新品种

(１)威优８２系三明市农科所选育而成的早籼迟熟杂交稻新组合。作早稻全生育期１２４天。株型集散适中 ,茎秆坚韧 ,分蘖力中等。株高９２．５ｃｍ ,平均穗粒数１２０粒 ,结实率８３ % ,千粒重２５．５ｇ。１９９７～１９９８年经省水稻品种抗瘟联合鉴定综合评价为中抗稻瘟病 ,中抗白叶枯病 ,纹枯病轻。１９９７～１９９８年参加福建省早杂优三系组区试 ,平均单产分别为６８２３ｋｇ／ｈｍ２和６７５９ｋｇ／ｈｍ２ ,比对照威优６４增产２．１５ %和７．３１ %。适宜福建省作早稻推广种植。(２)南厦０６０系南平市农科所、厦门大学生物学系育…     

2003年广东省审定通过的水稻品种

1.矮秀占广东省农业科学院水稻研究所选育的感温型常规稻品种。品种来源 :丰矮占1号//新麻占/七秀占。晚季全生育期113天左右 ,比粳籼89早熟3天。稻米外观品质为晚季一级至特二级。高抗稻瘟病 ,抗性频率中B群、中C群和全群均为100 % ,病圃穗颈瘟为1级 ,中抗白叶枯病 (3级 )。缺点是穗基部谷粒成熟较慢 ,纹枯病较重。2000、2001年晚季参加省区试 ,平均单产分别为435.2kg/667m2和436.2kg/667m2,比对照粳籼89分别增产6.86%和2.55%。适宜广东各地晚季种植和粤北以外地区早季种植。2.粤农占广东省农业科学院水稻研究所选育的感温型常规稻品种。…     

江西省2002年审定通过的水稻新品种

１.赣早籼４９号系由江西省农业科学院水稻研究所育成的常规早稻品种。全生育期１０６．７天。株高７４．８３ｃｍ ,每６６７ｍ２ 有效穗３０．１５万 ,每穗总粒数５０．３３粒 ,结实率８２．６３% ,千粒重２４．４ｇ。出糙率７９．４ % ,整精米率４９．８ % ,粒长６．９ｍｍ ,长宽比３．３ ,垩白粒率１９% ,垩白度２．８% ,直链淀粉含量１４．０% ,胶稠度７４ｍｍ。稻瘟病抗性 :苗瘟０级 ,叶瘟０级 ,穗颈瘟０级 ,接种鉴定２级。２０００～２００１年参加江西省水稻区试 ,２０００年平均单产３５３．６９ｋｇ／６６７ｍ２ ,比对照赣早籼４０…     

湖南省1997年审定通过的水稻新品种

湖南省农作物审定委员会于1997年2月审定通过了10个水稻新品种。（1）湘早籼23号：原编号5882－3，是株州市农科所以湘早籼7号作母本，浙辐9号作父本杂交选育的中熟早籼品种。该品种株型适中，茎秆中粗，叶片直立，剑叶夹角小，叶鞘、叶耳、叶舌均无色，抽穗整齐，成熟落色好。株高78.25cm，穗粒数83粒，结实率84．9％，千粒重24．7g。糙米率81．5％，精米率68．1％，整精米率44％，垩白粒率575％，垩白大小13．5％。1994、1995年参加省区试，全生育期105天，比湘早籼13号短2．6天，单产6408kg／hm2，比湘早税13号增产1．3％。经抗性鉴定，…     

2003年浙江省审定通过的水稻品种

1.嘉早312浙江省嘉兴市农科院选育的早籼稻品种。2001年浙江省早籼稻区试 ,平均单产483.39kg/667m2,比对照浙733增产13.6% (极显著 ) ;2002年续试 ,平均单产420.9kg/667m2 ,比对照嘉育293增产8.14%。2002年浙江省生产试验平均单产374.6kg/667m2 ,比对照嘉育293增产1.82 %。该品种全生育期109.45天 ,茎秆粗壮 ,株高适中 ,分蘖力中等 ,穗型较大 ,穗粒重结构协调 ,耐肥抗倒。米质较优。中抗白叶枯病 ,中感稻瘟病。适宜浙江省作早籼稻种植 ,但应注意稻瘟病的防治。2.中早21中国水稻研究所选育的中熟早籼稻品种。2001年浙江省金华市区试 ,平均单…     

2004年浙江省审定通过的水稻品种（组合）

嘉育46。系由嘉兴市农科院育成的早籼稻品种,亲本来源：嘉育293/Z94-207//G96-28-1。2002～2003两年浙江省早籼稻区试,平均单产461．5kg/667m^2,比对照嘉育293增产7．41％。全生育期110．3天。2003年浙江省生产试验,平均单产488．3kg/667m^2,比对照嘉育293增产10．75％。中抗稻瘟病,感白叶枯病。米质中等。适宜在浙江省作早稻种植。     

Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi

Abstract

Grain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike.     

Allelopathy in Agroecosystems in Spain

Summary

This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed.     

我国高粱育种研究进展

对我国高粱育种的主要途径和研究方向进行了概述,针对目前高粱产量徘徊现象,提出了高粱超高产育种设想,并对其技术路线进行了探讨。     

我国干热区甘蔗抗旱植蔗主要问题研讨

我国干热蔗区是我国甘蔗糖业的重要生产基地,蔗区光热资源丰富,唯降水分布不均成为植蔗生产的主要限制因子;根据蔗区植蔗特点和甘蔗需水规律,苗期抗旱是干热蔗区抗旱植蔗的关键,保证较多的总苗数和足够的生长量是苗期抗旱植蔗需解决的关键技术难题,制定相应的苗期抗旱植蔗栽培技术措施是解决该难题的重要保障;该观点为我国干热蔗区植蔗生产、甘蔗引育种提供理论和技术支持。     

Diurnal changes in net photosynthetic rate in potato in two environments

Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m⁻² s⁻¹ between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop.     

棉花体细胞无性系变异的研究进展

体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望.     

2009年中国稻米市场分析及2010年展望

以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。     

Advances in Variable Rate Technology Application in Potato in The Netherlands

Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed.