| 摘要: |
| 探讨斑茅割手密复合体后代叶片性状与单茎性状的关系，为挖掘斑茅、割手密农艺性状的优异基因提供理论依据。对斑茅割手密复合体GXASF108-2-28分别与甘蔗品系GT05-164和GT05-3279杂交获得的BC1后代及亲本共15个材料伸长期蔗叶性状（绿叶数、总叶数和绿叶面积）和单茎性状（株高、茎径和单茎重）进行比较分析。结果表明，两个组合后代在绿叶数、株高、茎径及单茎重上都有超越双亲或亲本之一的优势。绿叶面积在6个数量性状中遗传变异最大，且与株高和单茎重呈极显著正相关，其可作为斑割后代产量相关性状的间接选择指标。聚类分析表明，16份材料可以分为4大类，Ⅰ类材料12-A6-1、12-A6-3、12-A6-5、12-A6-25和12-A6-27绿叶面积大，总体表现较佳，是进一步研究利用的重点材料。 |
| 关键词: 斑茅 割手密 斑割复合体 叶面积 单茎性状 |
| DOI：10.11841/j.issn.1007-4333.2018.07.03 |
| 投稿时间：2017-07-11 |
| 基金项目:广西科技计划项目（桂科AB16380126）；广西农业科学院基本科研业务专项项目（2015YT04）；广西科技基地和人才专项（桂科AD17195100）；广西"八桂学者"专项（2013-03）；国家现代农业产业技术体系广西甘蔗创新团队项目（gjnytxgxcxtd-03-01）；国家自然科学基金项目（31760415） |
|
| Genetic variation and correlation analysis of characters in BC1 progeny of intergeneric hybrid (Erianthus arundinaceus×Saccharum spontaneum) |
|
HUANG Yuxin, ZHANG Baoqing, ZHOU Shan, YANG Cuifang, GAO Yijing, DUAN Weixing, LI Yangrui, ZHANG Gemin
|
| (Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Sciences/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement(Guangxi), Ministry of Agriculture, Nanning 530007, China) |
| Abstract: |
| Six agronomic traits in the elongation stage including the number of green leaves,total leaf number,green leaf area,stalk length,stalk diameter and stalk weight of the fifteen clones of BC1 progeny from GT05-164×GXASF108-2-28 and GT05-3279×GXASF108-2-28 and their parents,were analyzed in this study.The results showed that the number of green leaves,stalk length,stalk diameter and stalk weight for the progeny were all superior to both or one of parents.The green leaf area had the largest genetic variation,and displayed significant positive correlations with stalk length and stalk weight,which could be used as an indirect index for yield analysis.Moreover,the cluster analysis identified 4 groups.12-A6-1,12-A6-3,12-A6-5,12-A6-25 and 12-A6-27 in the first class had large green leaf area and could be taken as the key materials for further research and utilization.The results of this study provided references for the evaluation and screening of the progeny of intergeneric hybrid (Erianthus arundinaceus×Saccharum spontaneum). |
| Key words: Erianthus arundinaceus Saccharum spontaneum leaf area stalk characters |
