摘要
为了提高蓖麻杂交育种效率,研究杂交组合收获指数与性状之间的关系,观察和测量了133个蓖麻杂交组合的13个农艺性状,即收获指数、单株产量、生物量、百粒重、有效穗数、一级分枝数、株高、茎粗、主茎节数、主穗长、主穗位高、叶绿素含量、净光合速率。采用相关分析和回归分析研究133个杂交组合的农艺性状间的关系。结果表明,不同蓖麻杂交组合的收获指数差异较大,变幅为0.126~0.644,平均值为0.398;133个杂交组合中收获指数在0.5以上的组合仅占16.54%。相关关系结果表明,收获指数与单株产量呈极显著正相关,与主穗长呈极显著负相关。回归分析表明,单株产量、株高、主穗长、有效穗数4个性状对收获指数的影响较大。因此在育种过程中,选择主穗花序较长、植株相对较高、一级分枝数较多的个体,可提高育成材料的单株产量。
To improve castor hybrid breeding,correlation between harvest index and plant traits was investigated using 133 castor hybrid combinations.13 traits were invstigated,including harvest index,plant height,stem diameter,main stem node number,primary branch length,bearing height of primary spike,number of effective spikes,number of primary branches,yield per plant,hundred-grain weight,biomass,SPAD and Pn.Results showed that harvest index of the 133 combinations varied from 0.126 to 0.644,with an average value of 0.398.Among the 133 castor combinations,those with harvest index above 0.5 accounted for 16.54%.Correlation analysis revealed that harvest index had extemely significant positive correlation with the yield per plant,and extemely significant negative correlation with length of primary branch.Regression analysis showed that,yield per plant,plant height,length of primary branch and number of effective spikes had a greater impact on the harvest index.Thus in breeding process,selection of plants with longer main panicle inflorescences,relatively high plants and more number of primary branches could increase yield.
作者
顾帅磊
陆建农
黄家祥
杨婷
何晓琳
李东娜
Akwasi Yeboah
殷学贵
GU Shuai-lei;LU Jian-nong;HUANG Jia-xiang;YANG Ting;HE Xiao-lin;LI Dong-na;Akwasi Yeboah;YIN Xue-gui(Binhai Agricultural College,Guangdong Ocean University,Zhanjiang 524088,China;Jiaxiang Castor Research Institute,Zibo 255000,China)
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2022年第4期860-868,共9页
Chinese Journal of Oil Crop Sciences
基金
广东省科技计划项目(2013b060400024、2014A020208116、2016A02020-8015)。
关键词
蓖麻
杂交组合
收获指数
植株性状
相关分析
回归分析
castor
hybrids combination
harvest index
plant trait
correlation analysis
regression analysis
