云南地方糯玉米自交系产量性状的遗传效应分析  

Analysis of Genetic Effect on Yield Trait of Inbred From Waxy Corn Local Varieties in Yunnan Province

作　　者：伍少云[1] 孙荣[1] 奉有壁[1] 

机构地区：[1]云南省农业科学院生物技术与种质资源研究所,昆明650205

出　　处：《玉米科学》2007年第2期39-43,48,共6页Journal of Maize Sciences

摘　　要：采用NCⅡ遗传设计和朱军QGA加性-显性模型(AD模型)软件,分析来自云南省18个地方品种糯玉米、2个普通玉米和4个引进的自交系,研究了穗粗、单株粒重、千粒重、穗行数和穗重等9个性状的加性和显性遗传效应。结果表明,单株粒重、穗重和穗行数受基因加性效应控制,加性效应方差对表型方差的贡献率分别为33.7%、33%和29%;千粒重、穗长和穗粗受基因加性效应-显性效应控制,加性和显性效应方差对表型方差贡献率分别为千粒重33%和21%、穗粗39%和13%、穗长17%和10%;其它3个性状受环境影响较大,遗传模式也较为复杂。遗传力分析揭示了对单株粒重、穗重、穗行数、千粒重和穗粗选择效果明显;以性状加性效应值及显著性,筛选出3、10、15、16和18号5个糯玉米优异自交系,其所有观察性状的加性效应值均优于对照CK1(忻州黑糯)和CK3(中糯246)自交系,部分性状优于CK2(N9605)和CK4(自330)。Additive and dominance genetic effect were analyzed for ear diameter and grain weight per plant and weight per 1000 seeds and kernel rows per ear and weight per ear 9 traits of inbred material from 18 accessions waxy corn and 2 accessions common corn of local varieties, and from 4 accessions domestic other province, with NC Ⅱ ge netic design and AD model of Zhujun QGA software. The results indicated that （1） grain weight per plant and weight per ear and kernel rows per ear were controlled by additive effect, contribution of additive variance to phenotype variance are 33.7%, 33% and 29%, weight per 1 000 seeds and ear diameter and ear length were controlled by additive-dominance effect, proportion of additive and dominance to variance phenotype variance were 33% and 21% of weight per 1 000 seeds, 39% and 13% of ear diameter, 17% and 10% of ear length. （2） Other 3 traits were more affected by circumstance factor, genetic model were more complex too. （3） Effects of selection to grain weight per plant and weight per 1 000 seeds and kernel rows per ear and weight per ear and ear diameter were obvious, according to ap praise of hereditary capacity. （4） Number of 3, 10 , 15, 16 and 18 inbred were selected out, their value of additive effect at all traits observed were obviously excellent than CK1 and CK3, part trait observed were excellent than CK2 and CK4, but number 10 and 15 were the best.

关 键 词：糯玉米 自交系 遗传效应 云南省 

分 类 号：S513.024[农业科学—作物学]