Screening of Drought Resistance Identification Indexes for Rice(Oryza sativa L.) Cultivars in Ningxi

来源 :Agricultural Science & Technology | 被引量 : 0次 | 上传用户:yjqwml
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
The morphological characters, physiological characters, yield traits and yield per plant of total 49 rice cultivars from Ningxia were investigated under conditions of water stress and non-water stress so as to determine the relationship between each trait and yield per plant under water stress and the relationship between each relative character and drought resistance coefficient under water stress and non-water stress. The correlation, grey correlation, stepwise regression and path analyses showed that the tiller number per plant, plant height, grain density, effective panicle number per plant and grain number per panicle, total 5 traits, were significantly correlated with the drought resistance of rice, and they could be used to identify the drought resistance of rice in Ningxia. In addition, the drought resistance of rice was graded qualitatively according to the subordinate function value of corresponding drought resistance coefficient. The results showed that among the 49 rice cultivars from Ningxia,6 rice cultivars were highly drought resistant, and 9 rice cultivars were moderately drought resistant, suggesting that the evaluation method was feasible and effective. The morphological characters, physiological characters, yield traits and yield per plant of 49 rice cultivars from Ningxia were investigated under conditions of water stress and non-water stress so as to determine the relationship between each trait and yield per plant under water stress and the relationship between each relative character and drought resistance coefficient under water stress and non-water stress. The correlation, gray correlation, stepwise regression and path analyzes showed that the tiller number per plant, plant height, grain density, effective panicle number per plant and grain number per panicle, total 5 traits, were significantly correlated with the drought resistance of rice, and they could be used to identify the drought resistance of rice in Ningxia. In addition, the drought resistance of rice was graded qualitatively according to the subordinate function value of corresponding drought resistance coefficient. The results showed that among the 49 rice cul Tivars from Ningxia, 6 rice cultivars were highly drought resistant, and 9 rice cultivars were moderately drought resistant, suggesting that the evaluation method was feasible and effective.
其他文献
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
行政诉讼审理程序是行政诉讼裁判的前提和基础,是行政诉讼法中一个极其重要的问题。我国行政诉讼法对行政诉讼的审理程序规定及其简单,行政诉讼审理程序主要参照民事诉讼的审理
委付作为《海商法》中的一项重要制度在海上保险中发挥着重要的作用,在各国的海上保险法律制度中得到普遍认同及适用。本文以海上保险中的委付作为研究对象,通过我国《海商法
在一个成熟完善的市场经济中,经营主体也是多元的,不仅包括各种企业也包含如个体工商户等非企业形式,它们的作用不容忽视。本文主要探讨的属于中小企业范畴的一人投资经济组
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
随机复习1992年我校50岁以上教工查体心电图263愎。其中男136帧,50岁以上10帧,50岁以上,60岁以上105帧,70岁以上19帧,80岁以上2帧。女性127帧,50岁以上64帧,60岁以上55帧,70负以上84帧。每帧心电图记录为标准导联Ⅰ、Ⅱ Random rev
刑事诉讼是以解决国家与公民之间权益冲突为使命的诉讼形式,在刑事诉讼中集中体现了公民的个人权利与国家权力的紧张冲突与衡平关系。惩治犯罪与保障人权似乎永远是一对很难
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
在当代政治学的研究中,利益集团一直是很重要的研究领域。在西方民主代议制国家,利益集团是政治过程的重要力量,利益集团通过相互间的竞争、通过捐款、游说等行为影响政治决策过