冬小麦高花药培养力基因型的筛选

发布时间：2018-05-10 18:52

本文选题：小麦 + 花药培养力　；参考：《麦类作物学报》2017年10期

【摘要】：为了筛选小麦花培育种骨干亲本,减轻花培育种的基因型依赖性问题,对74个冬小麦品种(系)的5个花药培养力性状进行了鉴定,并对5个性状进行了相关性分析。结果表明,74个基因型的愈伤组织诱导率、绿苗分化率、绿苗产率、白苗分化率及白苗产率变化范围分别为0~43.17%、0~139.29%、0~20.83%、0~63.33%、0~7.17%,各花药培养力性状在所研究基因型中差异明显,存在基因型依赖性,其中绿苗分化率基因型间差异最大。基因型愈伤组织诱导特性与绿苗、白苗的分化正相关,愈伤再生分化成绿苗或是白苗没有相关性。筛选出绿苗产率高于1.0%的基因型22个,其中,SPLM2、衡96851、石4185、邯6172、河农6425五个基因型农艺性状较好,绿苗产率依次为8.17%、5.44%、2.39%、2.00%、0.72%,可作为花培育种的骨干亲本。
[Abstract]:In order to screen the backbone parents of flower cultivar of wheat and reduce the genotypic dependence of flower cultivar, five anther culture characters of 74 winter wheat varieties (lines) were identified, and the correlation analysis of 5 characters was carried out. The results showed that the callus induction rate, green seedling differentiation rate, green seedling yield rate, white seedling differentiation rate and white seedling yield rate of 74 genotypes varied from 0 to 43.170.139.29 respectively. The difference between genotypes of green seedling differentiation rate was the greatest. The characteristics of genotype callus induction were positively correlated with the differentiation of green seedlings and white seedlings, but there was no correlation between callus regeneration and differentiation into green seedlings or white seedlings. 22 genotypes with green seedling yield higher than 1.0% were selected, among which SPLM2, Heng 9851, Shi 4185, Han 6172, Henong 6425 were better agronomic characters, and the green seedling yield was 8.175.442.392.002.000.72, which could be regarded as the backbone parent of flower breeding.
【作者单位】：中国农业科学院作物科学研究所;
【基金】：“十三五”国家重点研发计划项目(2016YFD0102101) 中国农业科学院作物科学研究所中央级公益性科研院所基本科研业务费专项
【分类号】：S512.11

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