More QTL for flowering time revealed by substitution lines in Brassica oleracea
More QTL for flowering time revealed by substitution lines in Brassica oleracea
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DOI：
10.1038/sj.hdy.6886050
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发表时间：
1999-11-01
期刊：
影响因子：
3.8
通讯作者：
Kearsey, MJ
中科院分区：
文献类型：
--
作者：
Rae, AM;Howell, EC;Kearsey, MJ
从意大利甘蓝变种与白花甘蓝变种杂交中获得的79个重组回交替代系与白花甘蓝复发亲本一起进行了5年的田间试验。从播种到第一个凉亭开放的几天内对植株进行评分，鉴定出明显早于或晚于循环亲本开花的品系。根据替换的长度，在O1， O2, O3， O5和O9染色体上发现了11个QTL的证据，其中5个与之前在同一杂交的双单倍体系分析中发现的6个区域中的5个相似。有几个QTL在斥力上紧密相连。
Seventy-nine recombinant backcross substitution lines from a cross between Brassica oleracea var. italica and Brassica oleracea var, alboglabra were grown in field trials over five years along with the alboglabra recurrent parent. Plants were scored for the days from sowing to the opening of the first Bower, and lines that flowered significantly earlier or later than the recurrent parent were identified. Based on the lengths of the substitutions, evidence for 11 QTL on chromosomes O1, O2, O3, O5 and O9 was found, five of which mapped to similar regions to five of the six found in a previous analysis of doubled haploid lines from the same cross. Several of the QTL were linked closely in repulsion.