山西农业科学2025，Vol.53Issue(5)：58-66,9.DOI:10.26942/j.cnki.issn.1002-2481.2025.05.07
薏苡种间杂种F1主要农艺和总苞性状的杂种优势特征
Main Agronomic and Involucre Traits Heterosis of F1 Interspecific Hybrids in Coix L
摘要
Abstract
In order to illustrate the heterosis of main agronomic and involucre traits of F1 interspecific hybrids of wild and cultivar lines in(Coix L.),in this study,four cultivar lines including Liugu,Anyi 1,Yixianyiyi,and Jinzhouyimi were selected as the female parents,four wild lines including Liuguzhuzi,Gangchengnianzhu adlay,Tie adlay,and Liujiaolusu were selected as the male parent,16 interspecific hybrid combinations were obtained by NCⅡ genetic design To analyze the mid-parent heterosis and over-parent heterosis of 8 agronomic traits and 5 involucre traits.The results revealed that the values of mid-parent heterosis(MPH)of 8 agronomic traits in 16 F1 interspecific hybrids of wild and cultivar lines in adlay ranged-35.1%-80.1%and the values of over-parent heterosis(HPH)were-50.0%-53.3%.Plant height(PH),grain layer(GL),main stem diameter(MSD),length of leaf(LL),width of leaf(WL),and nodes on main stem(NMS)had obviously mid-parent and over-parent heterosis and brancing node(BN)tended to high-value parents,while total tillers per plant(TT)trait had negative heterosis.MPH values in five involucre traits ranged-13.7%-69.8%,and the HPH were-45.1%-27.5%.It demonstrated that involucre traits of 100-fruit weight(HFW)and length(IL),width(IW),perimeter(IP)showed strong MPH.But the involucre roundness had higher HPH values,which showed that the F1 hybrids involucre could be more roundness than their parent lines.In conclusion,compared with the parents,the interspecific F1 hybrids had strong growth vigor in agronomic traits,the female parents of southern subtropical cultivated lines probably created super parent combinations,and the involucre traits tended to their wild parental lines and dispalyed evident MPH.关键词
F1杂种/中亲优势/超亲优势/NCⅡ/薏苡Key words
F1 hybrids/mid-parent heterosis/over-parent heterosis/NCⅡ/Coix L.分类
农业科技引用本文复制引用
李祥栋,陆秀娟,郭超,魏心元,曾涛,潘虹,高爱农,石明..薏苡种间杂种F1主要农艺和总苞性状的杂种优势特征[J].山西农业科学,2025,53(5):58-66,9.基金项目
贵州省级财政种业发展项目(黔财农[2024]14号) （黔财农[2024]14号）
四川省自然科学基金(2023NSFSC0216) （2023NSFSC0216）
