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首页> 外文期刊>International Journal of Plant Breeding and Genetics >Diallel Analysis of Seedling Traits in Canola
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Diallel Analysis of Seedling Traits in Canola

机译：双低油菜籽苗性状的Diallel分析

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Parent selection, determining combining abilities and genetic variation are important in breeding programs. Diallel crosses, therefore, were tested among six canola varieties (Foseto, Option 500, Goliath, Kristina, Shiralee and PF-7045.90). Thirty hybrids and six parents were planted in a lattice design with 3 replications at Mazandaran Agricultural Researches Center, 2004-2005. Primary analysis of variation showed significant differences between genotypes; hence it seemed possible to study the desired traits through diallel analysis. Results of analysis of variation as per Griffing's 1st method for the duration of 50% of germination, 50% of emergence, three leaf stage, four leaf stage, the time between three and four leaf stage, primary length of root, length of seedlings and seedling vigor index showed that there were significant differences between genotypes (p<0.01). Mean square of general and specific combining ability and reciprocal crosses, statistically were significant for all traits, butmean square of reciprocal crosses for primary length of root was not significant. Mean square (GCA)/mean square (SCA) ration in all traits was significant owing to additive and non-additive gene effects of above mentioned traits, but non-additive gene effects are more important. Estimation of degree of dominance more that one for traits of studied and low narrow heritability showed that non-additive gene effects plays an important role in genetically control of these traits. Heterosis for all traits wasnegatively significant. Over all it could be concluded that, cv. Shralee was the best parent and Kristinax Shiralee was the best cross for all seedling traits.
机译：在育种计划中，选择亲本，确定结合能力和遗传变异很重要。因此，在6个油菜品种（Foseto，Option 500，Goliath，Kristina，Shiralee和PF-7045.90）中测试了Diallel杂交。 2004年至2005年，在Mazandaran农业研究中心以格子设计种植了30个杂种和6个亲本，其中3个重复。对变异的初步分析显示，基因型之间存在显着差异。因此似乎有可能通过透析分析研究所需的性状。根据格里芬格方法（Griffing）的第一种方法对发芽50％，发芽50％，三叶期，四叶期，三叶期至四叶期的时间，根的初级长度，幼苗的长度和幼苗活力指数表明基因型之间存在显着差异（p <0.01）。所有性状的一般和特异性结合能力的均方根和倒数均具有统计学意义，而根的初级长度的倒数均值均不显着。由于上述特征的加性和非加性基因效应，所有性状的均方（GCA）/均方（SCA）比率均显着，但非加性基因效应更为重要。对研究性状的主导程度估计值高，窄遗传力低，这表明非加性基因效应在遗传控制这些性状中起着重要作用。所有性状的杂种优势显着负。总的来说，可以得出结论。就所有幼苗性状而言，Shralee是最好的亲本，Kristinax Shiralee是最好的杂交品种。

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