作物学报2016，Vol.42Issue(8)：1233-1246,14.DOI:10.3724/SP.J.1006.2016.01233
不同高粱品种萌发期抗旱性筛选与鉴定
Screening and Identification for Drought Resistance during Germination in Sorghum Cultivars
摘要
Abstract
Germination is a key stage showing drought resistance in sorghum. The present study was conducted to investigate the responses of 54 different sorghum cultivars (hybrid combinations) to drought stress during germination and screen sorghum culti-vars suitable for growing in arid environment. PEG-6000 (–0.4 MPa) was used to simulate the typical drought stress environment in artificial climate chamber. Eight parameters including germination potential, germination rate, germination drought resistance index were measured. The results indicated that the comprehensive factor score functions were suitable for the comprehensive assessment of drought resistance during germination of sorghum cultivars based on principal component analysis (PCA). Based on comprehensive factor scores (Y-value), 54 sorghum cultivars (hybridized combinations) were clustered into four groups, in which 13218A×20982R was the highest drought resistant hybrid, 13 cultivars (hybridized combinations) were drought resistant, e.g. Jiza 133, 23 cultivars were drought sensitive, e.g. Sumac, and 17 cultivars were highly drought sensitive, e.g. Liaoza 35. Results of PCA showed that germination drought resistance index, germination rate and root length can be used to screen a large number of sorghum cultivars with drought resistance.关键词
高粱/萌发期/抗旱性/主成分分析/聚类分析Key words
Sorghum/Germination/Drought resistance/Principal component analysis/Cluster analysis引用本文复制引用
吴奇,周宇飞,高悦,张姣,陈冰嬬,许文娟,黄瑞冬..不同高粱品种萌发期抗旱性筛选与鉴定[J].作物学报,2016,42(8):1233-1246,14.基金项目
本研究由国家现代农业产业技术体系建设专项(CARS-06-02-02)，辽宁省教育厅一般项目(L2014271)和沈阳农业大学博士后基金项目(139173)资助。 This study was supported by the China Agriculture Research System (CARS-06-02-02), the General Fund of Department of Education of Liaoning Province (L2014271), and the Postdoctoral Fund of Shenyang Agricultural University (139173) （CARS-06-02-02）
