中国农业科技导报2024，Vol.26Issue(10)：22-29,8.DOI:10.13304/j.nykjdb.2024.0177
BS型小麦光温敏雄性不育系柱头外露规律研究
Study on Stigma Exsertion Pattern of BS Type Photo-thermo Sensitive Male Sterile Lines of Wheat
摘要
Abstract
The flowering habits of wheat BS type photo-thermo sensitive male sterile lines affect its outcrossing performance,which affect the seed production yield of hybrid wheat.In order to clarify the effect of stigma exsertion on the outcrossing seed setting rate of sterile lines,15 different sterile lines were used as materials,and 3 restorer lines possessed good combining ability and excellent seed production trait were selected.The changing patterns of stigma exsertion rate in sterile lines were investigated for 10 d,from the beginning of flowering,and the correlation between the stigma exsertion rate and outcrossing seed setting was also studied.The results showed that the stigma exsertion rate increased firstly and then decreased in most sterile lines.In the full flowering stage,the stigma exsertion was mainly concentrated in the middle of ears.BS278-2,BS163,BS366,BS210 exhibited good stigma exsertion characteristics.The correlation analysis showed that stigma exsertion rate was significantly positively correlated with the outcrossing seed setting rate of stigma exsertion florets.In conclusion,stigma exsertion was one of the crucial factors affecting outcrossing of sterile lines,and the sterile lines with stigma exsertion could be selected for increasing seed production yield.Above results provided scientific basis for the breeding of photo-thermo sensitive sterile lines with high outcrossing seed setting rate.关键词
BS型小麦光温敏雄性不育系/开花习性/柱头外露/异交结实Key words
BS type photo-thermo sensitive male sterile lines of wheat/flowering habits/stigma exsertion/outcrossing seed setting分类
农业科技引用本文复制引用
岳洁茹,孙辉,秦志列,侯起岭,苑少华,郝小聪,杨吉芳,白秀成,赵昌平,张风廷..BS型小麦光温敏雄性不育系柱头外露规律研究[J].中国农业科技导报,2024,26(10):22-29,8.基金项目
国家小麦产业技术体系建设项目(CARS-03-3) （CARS-03-3）
北京市农林科学院科技创新能力建设专项(KJCX20230125) （KJCX20230125）
北京市农林科学院杂交小麦研究所自主立项课题(XM22QN2024-4). （XM22QN2024-4）
