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  • 徐超华,陆鑫,刘新龙,等.甘蔗近缘种蔗茅Erianthus fulvus考察收集与表型性状初步研究[J].植物遗传资源学报,2014,15(5):962-966.    [点击复制]
  • xuchaohua,陆鑫,刘新龙,et al.Exploration and Phenotypic Traits Analysis of Erianthus fulvus[J].植物遗传资源学报,2014,15(5):962-966.   [点击复制]
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甘蔗近缘种蔗茅Erianthus fulvus考察收集与表型性状初步研究
徐超华1, 陆鑫1, 刘新龙1, 刘洪博1, 苏火生1, 马丽1, 林秀琴1, 李旭娟1, 蔡青2
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(1.云南省农业科学院甘蔗研究所;2.云南省农业科学院甘蔗研究所、云南省农业科学院生物技术与种质资源研究所)
摘要:
为有效评价和利用蔗茅种质资源,挖掘其优良性状,以滇、黔、川考察收集的29份蔗茅为材料,选取5个数量性状为指标,对其多样性指数、变异系数、数量性状之间的相关性、数量性状与经纬度、海拔的相关性进行研究。分析结果表明:(1)共采集到25份高海拔种质资源,其中海拔超过2800米有4份,进一步丰富了甘蔗野生种质资源库;(2)蔗茅种质资源数量性状的Shannon-Wiener多样性指数均较高,株高多样性指数最高(1.441),锤度多样性指数最低(1.291);数量性状遗传变异较丰富,各性状变异系数范围为21%~38%,变异系数最大的为株高(38%),最小的为叶长(21%);(3)蔗茅种质资源性状差异显著,叶长、叶宽、株高、茎径存在较大相关性,而与锤度不相关;叶宽与经度呈正相关,与纬度、海拔呈负相关。(4)聚类分析结果表明,蔗茅种质资源可分为四大类群,其中Ⅱ类群(EF-27)具有良好的数量性状和锤度品质潜力,可推荐作为甘蔗育种杂交利用首选材料。
关键词:  蔗茅  表型性状  遗传多样性
DOI:
投稿时间:2013-12-18修订日期:2014-01-11
基金项目:
Exploration and Phenotypic Traits Analysis of Erianthus fulvus
Abstract:
In order to utilize and estimate efficiently the Erianthus fulvus and to develop the elite traits, genetic diversity index, correlation coefficient of variance, correlation among quantitative traits, and correlation between quantitative traits and longitude, latitude or altitude were evaluated based on 5 quantitative traits of 29 Erianthus fulvus collected from Yunnan, Guizhou, Sichuan in 2012-2013.The results showed that:(1) 25 high altitude germplasm resources were collected, of which more than 2800 meters have 4 clones, and enrich the wild germplasm resource library of sugarcane in China;(2)The Shannon-Wiener genetic diversity index was high, the stalk length trait exhibited the highest genetic diversity index (1.441), while brix trait showed the lowest (1.291). There were high genetic variances in quantitative traits, with variation coefficient ranging from 21%~38% ,stalk length showed the highest variance value (38%) and lamina length showed the lowest (21%). (3) There were highly significant differences in quantitative traits, there was a significant correlation between lamina length, lamina width, stalk diameter and stalk length each other, not related with the brix. Lamina width traits showed positively correlation with longitude,and negative correlations with latitude, altitude.(4)The cluster analysis indicated, 29 Erianthus rufipilus resources could be divided into four groups, Erianthus fulvus Ⅱ(EF-27) groups had a good quality potential of brix, could be used as recommendations for development and utilization of breeding materials.
Key words:  Erianthus fulvus  phenotypic traits  genetic diversity

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