• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physiology and Molecular Biology of Plants >Pre evaluation of cassava (Manihot esculentaCrantz) germplasm for genotypic variation in the identification of K efficient genotypes through different statistical tools
【24h】

Pre evaluation of cassava (Manihot esculentaCrantz) germplasm for genotypic variation in the identification of K efficient genotypes through different statistical tools

机译：通过不同统计工具对Cassava（Manihot Esculentacrantz）种质进行基因型变异的预析研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Among the tropical tuber crops, cassava (Manihot esculentaCrantz) deserves special attention as regards to its higher biological efficiency in terms of dry matter production which incidentally implies to the higher amount of nutrient extraction from the soil resulting in better response to the application of manures and fertilizers. Among the major nutrients, Potassium (K) is considered as the key nutrient for cassava owing to its influence both in tuber yield and tuber quality. The above facts as well as the availability of sufficient cassava genotypes in the germplasm collection of ICAR-CTCRI made us to initiate research work to screen cassava germplasm including the pre breeding lines. The objective being to identify K efficient genotypes which can yield well under limited availability of K so that the external application of K can be reduced. This paper describes the wide variation noticed during the pre evaluation of 83 elite genotypes which was done as a prelude in the screening and identification of K efficient genotypes. The characters studied were tuber yield, tuber characters, plant dry matter percentage, plant K content, tuber quality (starch, cyanogenic glucosides) attributes, physiological efficiency and plant biometric characters. The variation among the genotypes for the above traits was assessed by making some yardstick for classification which in turn helped in determining the percent distribution of genotypes in each category. The variation among the genotypes were further affirmed through principal component analysis, wherein the first five components explained more than 77% of variability and the cluster analysis performed grouped these genotypes into five clusters. The biplot showed the traits which are closely linked to the genotypes. The dendrogram constructed indicated similar genotypes to that of the clusters to the extent of more than 50% revealing the association of members with similar traits in clusters and dendrograms. The study helped in establishing the drastic variation among the genotypes along with identification of six genotypes viz., Aniyoor, 7 Sahya (2), 7 III E3-5, W-19, CR 43-8, 6-6 for further detailed experimentation to identify K efficient genotypes.
机译：在热带块茎作物中，木薯（Manihot Esculentacrantz）应特别注意其在干物质生产方面的较高生物效率，顺便提一步意味着从土壤中的营养素提取量较高，导致对植物的应用更好地反应肥料。在主要的营养素中，由于其在块茎产量和块茎质量方面，钾（K）被认为是木薯的关键营养素。上述事实以及足够的木薯基因型在ICAR-CTCRI的种质收集中的可用性使我们启动研究工作，以筛选包括预育种线的木薯种质。目的是鉴定K有效基因型，其可以在K的有限可用性下产生良好，使得K的外部施加可以减少。本文介绍了在83个Elite基因型的预评估期间注意到的宽变异，其作为筛选和鉴定K有效基因型的序列进行。所研究的角色是块茎产量，块茎特征，植物干物质百分比，植物K含量，块茎质量（淀粉，氰基葡糖苷）属性，生理效率和植物生物特征。通过制造一些用于分类的尺寸来评估上述性状的基因型的变异，这反过来有助于确定每个类别中基因型的分布百分比。通过主成分分析进一步肯定基因型之间的变化，其中前五个组分解释了超过77％的可变性，并且进行聚类分析将这些基因型分为五个簇。该方法显示与基因型密切相关的特征。构建的树状图表明了与簇的类似基因型，到大于50％的程度，揭示了成员与簇和树枝图中具有相似性状的成员的关联。该研究有助于建立基因型中的急剧变异，以及鉴定六种基因型VIZ。，Aniyoor，7 sahya（2），7 III E3-5，W-19，CR 43-8,6-6，用于进一步详细的实验鉴定K有效基因型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号