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- Title
K 型小麦保持系遗传多样性的系统聚类分析.
- Authors
史晓芳; 逯腊虎; 张 伟; 张 婷; 袁 凯; 杨 斌; 张建诚
- Abstract
In order to provide basis for breeding for male sterile line and maintainer line of K-type wheat and selection of hybrid combination, in this study, the genetic diversity, correlation, and cluster analysis of 7 main agronomic traits of 25 k-type wheat maintainer lines were carried out. The results showed that 7 main agronomic traits of 25 k-type wheat maintainer lines showed great variability, the variation coefficients from low to high were plant height(7.12%), 1000-grain weight(7.49%), grain number per spike(9.12%), spike length(9.61%), grain number per plant(16.69%), spike number per plant (18.37%), and grain weight per plant(20.61%). The correlation analysis showed that there were extremely significant positive correlations among the three pairs of traits, which were grain number per plant and grain weight per plant (correlation coefficient r=0.732), spike number per plant and grain number per plant(r=0.577), and grain weight per plant and spike number per plant(r=0.522), respectively. 4 significant positive correlations were found between 1000-grain weight and grain weight per plant(r=0.371), spike length and grain number per spike(r=0.278), plant height and spike length(r=0.269), spike length and grain number per plant(r=0.211). 2 significant negative correlations were found between plant height and grain number per spike(r=-0.214), grain number per spike and spike number per plant(r=-0.399). Cluster analysis showed that the genetic distance of 25 k-type wheat maintainer lines varied from 1.15 to 26.25. At the genetic distance of 12.50, the tested varieties were divided into 5 groups: there were 17 varieties in Group I, and Group I were divided into 3 sub-groups at the genetic distance of 7.50. There was one variety in Group II, ShiH09-7075, whose grain weight per plant was 8.59 g, lower than that of other groups. There was one variety in Group III, Jun 2016, whose plant height was 50.67 cm, lower than that of other groups. There were five varieties in Gropp IV, including Heng 4568, Shannong 0911, Zhoumai 16 and so on, whose spike number per plant was 9.27, more than that of other groups. There was one variety in Group V, Heng5011, whose plant height was 70.52 cm, higher than that of other groups.
- Publication
Journal of Shanxi Agricultural Sciences, 2024, Vol 52, Issue 2, p1
- ISSN
1002-2481
- Publication type
Article
- DOI
10.3969/j.issn.1002-2481.2024.02.01