燕麦资源生物学性状多样性分析

Diversity Analysis on Biological Characters of Oat Resources

为了扩充山西省燕麦育种材料遗传基础,收集289份燕麦种质资源,并对22个生物学性状进行分析评价。结果表明,供试燕麦种质间各性状遗传差异较大,具有较丰富的遗传多样性。根据种质间各性状的遗传差异,对供试材料进行聚类分析,选取68份具有代表性的燕麦材料在距离系数为3.8时划分为6类,其中,种质群Ⅰ包括9份材料,种质群Ⅱ包括12份材料,这2类可作为燕麦矮化育种亲本;种质群Ⅲ包括22份材料,可作为培育饲草品种的亲本;种质群Ⅳ包括5份材料,可作为高产品种的育种亲本;种质群Ⅴ包括8份材料,无突出优异性状;种质群Ⅵ包括12份材料,可作为以株高和穗长为育种目标的燕麦亲本。

To enrich the genetic basis of oat breeding materials in Shanxi province, the diversity of 22 biological characters of 289 oat germplasm was investigated. The results showed that the genetic diversity index of every character was bigger, and the diversity of germplasms was much abundant. According to genetic difference of every characteristic among varieties, cluster analysis indicated that the 68 germplasm which had representation for the 289 germplasm could be classified into 6 clusers at distance coefficients of 3.8, 9germplasm were classified intoⅠ cluster and 12 germplasm were classified into Ⅱ cluster, these two clusers could be as parent for breeding dwarfted varieties. 22 germplasm were classified into Ⅲ cluster and this cluster could be as parent for breeding forage grass. 5germplasm were classified into Ⅳ cluster and this cluster could be as parent for breeding high yield oat. 8 germplasm were classified intoⅤ cluster, but the beneficial traits were not be observed. 12 germplasm were classified into Ⅵ cluster and this cluster could be as parent of plant height and spike length breeding objectives.