Repeatability of different stability parameters for grain yield in chickpea

The presence of genotype × environment (GE) interactions in plant breeding experiments has led to the development of several stability parameters in the past few decades. The present study investigated the repeatability of these parameters for 16 chickpea (Cicer arietinum L.) genotypes by correlating their estimates obtained from extreme subsets of environments within a year and also over years. Based on the estimates of response and stability parameters within each trial, the ranking of genotypes in the low-yielding subset differed from that in the high-yielding subset. This indicates poor repeatability for response and stability parameters over the extreme environmental subsets. The estimates of mean yield and stability parameters represented by ecovalence, W²_i, were consistent over years, whereas those of response parameters (b_i, and S²_i) showed poor repeatability. Our results suggest that single-year results for yield and stability can be used effectively for selecting cultivars with stable grain yield if tested in a wider range of environments.     

Genetics of five hairy phenotypes and a linkage group of Pennisetum americanum

Summary In pearl millet hairy lamina, hairy sheath and hairy stem were inherited as monofactorial recessives while hairy leaf margin and hairy node were inherited as monogenic dominant traits. The gene for hairy lamina hl showed independent assortment from the gene for hairy node, Hn, and showed linkage with the genes hst (hairy stem), hs (hairy sheath) and Hm (hairy leaf margin). Furthermore, Hl was observed to have an epistatic effect on the expression of hs. The percentages of recombination between the gene pairs hl-hst, hl-hs and hl-Hm were 0.0, 8.30±0.44 and 19.81±0.98 respectively. Thus the genes hl-hst-hs Hm form one linkage group.     

厚朴苗木质量与幼树生长关系的研究

为提高厚朴造林质量,开展了苗木地径、亩高与厚朴幼树生长关系的研究,结果表明：厚朴苗木高度对幼树生长无明显的影响,苗木过高反而会降低造林成活率;苗木地径大于0．9cm时,地径对幼树生长也无显著的影响。因此,厚朴苗木不宜以苗高为分级依据。厚朴苗木的适宜高度可从便于起苗、运输、栽种等生产环节来确定。厚朴苗木地径的分级,优质苗的下限也不应大于0.9cm。     

曲靖兔红细胞免疫功能研究及意义

应用红细胞Ｃ３ｂ受体花环试验（Ｃ３ｂＲＲ）和红细胞免疫复合物花环试验（ＩＣＲ）,对曲靖兔红细胞免疫功能进行了研究。结果证实,曲靖兔红细胞表面存在较高的Ｃ３ｂ受体（Ｃ３ｂｒｅｃｅｐｔｏｒ,Ｃ３ｂＲ）,表明红细胞免疫系统（Ｒｅｄｃｅｌｉｍｍｕｎｅｓｙｓｔｅｍ,ＲＣＩＳ）的概念亦适用于这种动物;曲靖兔的ＲＣＩＳ在生理及病理条件下发挥重要的免疫功能。     

木屑堆积发酵料及其在栽培毛木耳上的应用

对木屑堆积发酵料栽培食用菌降低污染的原因进行了较为系统的研究．结果表明,发酵料能减少污染与其可溶性糖分的减少,粗蛋白、全 Ｎ、全 Ｐ等营养物的增加,产生抑菌物质以及发酵过程高温杀死料中的大部分虫卵、病菌等有关．用发酵料栽培毛木耳能大幅度降低霉菌污染,提高品质,增加产量．     

测绘新技术在水利工程建设和管理中的应用初探

 简要介绍一些测绘新技术,探讨了这些新技术在水利工程建设和管理中的应用。笔者认为,这些测绘新技术不仅充实了水利工程测量科学理论,且具有较强的可操作性、准确性、提高了水利工程测量工作的效率,为水利工程建设和管理带来效益奠定了基础。     

Chlorophyllide-a Oxygenase 1 (OsCAO1) Over-Expression Affects Rice Photosynthetic Rate and Grain Yield

Leaf color and photosynthesis are important factors for rice growth and development. Hence, improving the photosynthetic rate is an effective approach for increasing rice yield. We isolated a gene,chlorophyllide-a oxygenase 1(OsCAO1), which characterized a rice near-isogenic line namedfgl(faded green leaf). Compared with its recurrent parent, Zhefu 802 (ZF802, an early-seasonindicarice variety),fglhad a faded green leaf color and lower chlorophyll (Chl) content, especially Chl b content. Furthermore, genetic and physiological analysis confirmed that leaf color was affected by the novel alleleOsCAO1, which had a two-base pair deletion in the ninth exon. Subsequently, we over-expressed theOsCAO1gene in ZF802. Interestingly, whileOsCAO1over-expression (OX) increased Chl b synthesis, the OX plants had a higher photosynthetic rate and heavier 1000-grain weight than ZF802. In conclusion, the novel alleleOsCAO1was involved in the positive regulation of leaf color, photosynthetic rate and rice yield.     

猪繁殖障碍性主要传染病的血清流行病学研究

对采自云南省楚雄州10县市22个规模猪场及107户农户的803份猪血清、642份临床无异常的种猪抗凝全血、84头繁殖障碍母猪血清及4头乳猪脏器,应用胶乳凝集试验(LAT)、猪伪狂犬病gE抗体鉴别酶联免疫吸咐试验(ELISA)、多方法酶联免疫吸咐试验、虎红平板凝集试验及试管凝集试验、间接血凝试验(HIA)、细菌学检验、流行病学调查等方法,对PR、PPV、PRRS、PCV-2、CSF、JE、布病、衣原体病共8种病同步进行血清学(猪瘟病原学)调查,结果感染率分别为30.39%、21.05%、3.11%、59.40%、1.71%、24.53%、0.25%和10.71%。流行病学调查结果,繁殖障碍发病场占调查场的68.18%,各场母猪繁殖障碍发病率在75.00%-0之间,农户散养母猪在20.00%-0之间。