低雨量环境里大麦的高产性状

来源 :大麦科学 | 被引量 : 0次 | 上传用户:Yxiaowanzi
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本文报导1985/1986/和1986/1987年进行的9个产量试验的结果,目的在于了解低雨量的地中海地区大麦的高产性状.对能代表有用性状间差异的37个二棱基因型和35个六棱基因型在三个不同环境,即叙利亚北部(期望雨量212-328毫米)、英国剑桥(干旱和灌溉)的试验中进行了比较.测量了产量、产量成分以及其它形态的和发育的性状,并计算了相关.二校组基因型和六棱组基因型的籽粒产量在除剑桥灌溉试验中,六棱基因型产量最高.除了已知二棱基因型和六棱基因型间在穗数和穗粒数有差异外,籽粒产量和测量性状之间的单相关指出.在干旱环境里二棱大麦和六棱大麦高产的主要性状是匍匐的生长习性、生长势强、灌浆期短、地面覆盖良好、抽穗早、单位面积穗数多、粒大。在二棱基因型里,矮杆和灌浆期短也是重要的.而在六棱基因型里,高杆、麦草产量高.穗粒数多和长穗(花序梗)是重要的。这些性状与干旱敏感指数和通过产量潜力以及抽穗期调正的产量之间的相关证实了单相关的结论.讨论了有关性状的生理基础以及在育种上的应用。
其他文献
Professor Youyou Tu (China Academy of Chinese Medical Sciences,Beijing) was awarded the 2011 Lasker~DeBakey Clinical Medical Research Award for her contribution
甜瓜(Cucumis melo L.)在世界园艺产业中占有重要地位,在国内外广泛栽培,是重要的经济作物之一。中国是世界甜瓜生产大国,我国甜瓜栽培面积逐年扩大,并逐步形成规模化生产,由
柑橘产区每年因病原菌的侵染造成柑橘采后腐烂病害的损失巨大,空气是一些病原菌扩散传播的主要媒介,由于气候、管理等条件的不同,不同柑橘产区空气中的微生物的种类和数量不
Transcriptional activators are required to tu on the expression of genes in a eukaryotic cell.Activators bound to the enhancer can facilitate either the recruit
Space flight experiments have suggested that microgravity can affect cellular processes in microorganisms.To simulate the microgravity environment on earth,seve
The landmark discoveries by Shinya Yamanaka in mice and later separately by James Thompson in humans that adult animal cells can be reprogrammed to a pluripote
Mammalian germ line cells undergo unique cellular and genetic changes under the regulation of specific regulators,in different stages as they develop and differ
Tissue and organ differentiation is tightly controlled to ensure proper development and function of the growing embryo as well as cells such as lymphocytes that
Proteins are major executors of life processes, carrying out essential and nonessential functions inside and outside of the cell, in species ranging from simple
The variety of human cancers in which the retinoblastoma protein pRb is inactivated reflects both its broad importance for tumor suppression and its multitude o