生长期的 HTC 对豌豆植株高度及其抗倒伏能力的影响

E. V. Kozhukhova
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摘要

在 Pisum satvum L.的育种过程中,我们发现不同年份的相同样本根据茎秆长度可能属于不同的植物分类等级。在热量和湿度条件不同的年份,样本的抗倒伏性(RL)也可能有不同的估计值。因此,研究的目的是确定豌豆的株高和抗倒伏性与生长季节水热系数(HTC)的关系。研究于 2019-2023 年在克拉斯诺亚尔斯克边疆区的森林草原、克拉斯诺亚尔斯克农业研究所豌豆育种实验室的竞争性品种试验苗圃中进行。该地的土壤为中等厚度的普通切尔诺泽姆土,腐殖质中等,中性偏酸。研究共采集了 8 个自选豌豆样本。样本以系统的方式排列,一式四份,小区面积为 15 平方米。研究结果表明,要根据茎秆长度和抗倒伏性客观地描述豌豆样本的特征,就必须考虑到生长季节的 HTC,因为在生长季节 HTC 不同的年份,植株长度之间的差异可能会有 2 倍的变化。植株长度与生长季节的热量系数有很大关系;根据生长季节月份的不同,8 月份的直接相关性最强 r ± Sr = 0.88 ± 0.08。在过度潮湿的生长季节,样本的翘曲度最大,而在干燥的生长季节,样本的翘曲度最小,两者的评估差异可以达到一个点。HTC 的增加对半矮小样本和整个样本抗倒伏性的降低作用最大;中等大小样本的依赖程度一般。如果按生长季节的月份进行分析,8 月份的 HTC 对降低植物抗倒伏能力的影响最大,r ± Sr = -0.95 ± 0.18,p = -0.75。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of HTC of the growing period on the height of peas plants and their resistance to logining
In the process of breeding work with the Pisum satvum L. it was noticed that the same samples in different years may belong to different gradations of plant classification according to stem length. Resistance to lodging (RL) of samples in years with contrasting heat and moisture conditions may also have different estimates. In this connection, the purpose of the research was to identify the dependence of plant height and resistance to lodging of peas on the hydrothermal coefficient (HTC) of the growing season. The research was carried out in 2019 2023 in the forest-steppe of the Krasnoyarsk Territory, in the competitive variety testing nursery of the pea breeding laboratory of the Krasnoyarsk Research Institute of Agriculture. The soil of the site is represented by ordinary chernozem of medium thickness, medium humus with neutral acidity. For the study, 8 samples of selfselected peas were taken. Samples were arranged in a systematic manner in quadruplicate, the plot area being 15 m2. During the research, it was revealed that in order to objectively characterize pea samples by stem length and its resistance to lodging, it is necessary to take into account the HTC of the growing season, since the differences between the lengths of plants in years of different HTC of the growing season can change by 2 times. The length of plants depended significantly on the hydrothermal coefficient of the growing season; separately for the months of the growing season, it was revealed that the strongest direct correlation is typical for August r ± Sr = 0.88 ± 0.08. The maximum lodging of samples was noted during an excessively humid growing season, the minimum during a dry one, the difference in the assessment could reach one point. An increase in HTC had the maximum effect on reducing the resistance to lodging of semi-dwarf samples and the entire sample; medium-sized samples showed an average degree of dependence. When analyzed by month of the growing season, the greatest influence on the decrease in plant resistance to lodging had the August HTC r ± Sr = -0.95 ± 0.18, p = -0.75.
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