甘蔗杂交后代主要荧光性状的遗传力及配合力分析  

Analysis of Heritability and Combing Ability of Main Chlorophyll Fluorescence Characters in Sugarcane Hybrid Populations

作　　者：徐良年[1] 罗俊[1] 陈如凯[1] 邓祖湖[1] 张木清[1] 张华[1] 高三基[1] 

机构地区：[1]农业部甘蔗生理生态与遗传改良重点开放实验室,福建福州350002

出　　处：《热带作物学报》2007年第1期34-39,共6页Chinese Journal of Tropical Crops

基　　金：国家"863"计划项目(2001AA241191;2002AA241031);国家科技攻关先导项目(2002BA544C)资助

摘　　要：以6×3不完全双列杂交(NCⅡ)衍生的18个家系实生苗为材料,对主要荧光性状PSⅡ原初光能转换率(Fv/Fo)、PSⅡ潜在活性(Fv/Fm)、光合量子产额(Y)、光化学猝灭系数(qP)、非光化学猝灭系数(qN)的遗传力和配合力进行分析。结果表明Fv/Fo,Fv/Fm、Y、qN、qP的遗传主要受基因的非加性效应所制约,这些荧光性状的广义遗传力(h82)变幅为27.46%～44.38%;亲本赣75-65和崖84-153各荧光性状一般配合力为正值且较大,是配合力较好的高光效亲本;根据配合力总效应,综合表现较好的高光效组合有赣75-65×崖84-153,桂69-156×崖84-153、CP81-1254×崖84-153,CP65-357×崖82-96。Heritability and combining ability of the major chlorophyll fluorescence characters Fv/Fo ,Fv/Fm, Y, qP, qN were estimated with the seedlings of 18 sugarcane families as material derived from 6×3 incomplete diallel （NCII）. The results showed that the non-additive gene effects were principal in Fv/Fo, Fv/Fm, Y, qN, qP. The broad sense heritabilities （hs2 ） of chlorophyll fluorescence characters ranged from 27.46 % to 44.38 %, and Gan75-65 and Ya84-153 were found good parents with high photosynthetic efficiency and high combining ability. According to the total combining ability, combinations Gan75-65 ×Ya84-153, Gui69-156×Ya84-153, CPS1- 1254×Ya 84-153, and CP65-357 ×Ya82-96 were better crosses with high photosynthetic efficiency in overall characters.

关 键 词：甘蔗 不完全双列杂交 叶绿素荧光 配合力 遗传力 

分 类 号：S566.132[农业科学—作物学]