摘要
通过对37份高结实四倍体水稻结实率的统计分析,发现多倍体减数分裂稳定性(Polyploid meiosis stability,PMeS)的高结实特性能稳定遗传,所选不同株系的结实率在80%以上。因此,在四倍体水稻加代纯合的过程中,随着世代增加,向增加总粒数和实粒数方向加压,选择到理想稳定高结实材料是可能的,而秕粒数的增减成为四倍体水稻在湖北省田间选育的重要指标。在四倍体水稻加代纯合的过程中,试图从结实率提高方面继续加压选择,选育到更理想材料虽有可能,但其选择概率很小,尤其是快速选择到更理想材料有一定困难。为此,选育更应该放在综合性状的改良。
Through the statistical analysis of the seed setting rate of 37 high seed setting tetraploid rice,it was found that the high seed setting characteristics of polyploid meiosis stability(PMeS)could be stably inherited,and the seed setting rate of the selected different lines was more than 80%.Therefore,in the process of homozygous addition of tetraploid rice,with the increase of generation,it was possible to select the ideal stable high-seeding material by increaseing the total number of grains and the number of filled grains,and the increase and decrease of the number of unfilled grains had become an important index for the field breeding of tetraploid rice in Hubei Province.In the process of homozygous addition of tetraploid rice,it was possible to continue pressure selection from the aspect of improving seed setting rate.Although it was possible to breed more ideal materials,the selection probability was very small,especially in the quick selection of more ideal materials.Therefore,the choice should be placed more on the improvement of comprehensive traits.
作者
郑明
宋兆建
张献华
刘育华
何玉池
隗志松
陈柏林
朱永生
曹国长
刘华林
王群
王庆飞
陈龙
汪德龙
蔡得田
ZHENG Ming;SONG Zhao-jian;ZHANG Xian-hua;LIU Yu-hua;HE Yu-chi;KUI Zhi-song;CHEN Bo-lin;ZHU Yong-sheng;CAO Guo-chang;LIU Hua-lin;WANG Qun;WANG Qing-fei;CHEN Long;WANG De-long;CAI De-tian(Wuhan Polyploid Biotechnology Co.Ltd.,Wuhan 430345,China;Xiaogan Academy of Agricultural Sciences,Xiaogan 432000,Hubei,China;School of Life Sciences,Hubei University,Wuhan 430062,China;Wuhan Academy of Agricultural Sciences,Wuhan 430345,China)
出处
《湖北农业科学》
2022年第24期11-14,35,共5页
Hubei Agricultural Sciences
基金
多倍体水稻研发及应用项目[2017020899010100
武科计(2011)150号]
湖北省农业科学院与孝感市人民政府科技合作共建协议[孝农业文(2011)60号]
湖北省农业科技创新中心资助项目(2007-620-001-03)
湖北省农业厅优质稻研究开发项目[鄂农函(2002)73号]。
关键词
四倍体水稻
结实率
选择
tetraploid rice
the seed setting rate
selection
