作物学报2005，Vol.31Issue(8)：1007-1013,7.
异源细胞质小麦D2-鉴26的耐盐特征及其遗传基础
Genetic Basis and Characterization of Salt Tolerance in Alloplasmic Wheat D2-'Jian 26'
摘要
Abstract
Alloplasmic wheat D2-'Jian 26', euplasmic wheat'Jian 26' and salt-tolerant control cultivar `Keyi 26' were evaluated in developmental and physiological traits at seedling stage under four levels of NaCl (0 mmol/L, 85.56 mmol/L, 171.04 mmol/L, 256.67 mmol/L). Significant genetic effects of D2-type cytoplasm on salt tolerance and genotypic differences in salt tolerance were observed. A clear improvement in terms of the developmental and physiological behaviours of D2-'Jian 26' and 'Jian 26' was demonstrated for alloplasmic line D2-'Jian 26'. In view of its better salt-tolerance compared with 'Keyi 26' and 'Jian 26', D2-'Jian 26' could be used as a new salt-tolerant germplasm. Under the low or medium salt-concentration, more root branching, large SK, Na(uptake) and SK, Na(transport), and good properties of leaf (relatively higher RWC and relatively lower cell-membrane damage and relatively higher chlorophyll content) were the potential usefulness as a salinity stress avoidance mechanism, suggesting that these parameters in stress conditions would be the more reliable selection criteria for salt tolerance in alloplasmic wheat. D2-type cytoplasm would be very useful for wheat breeding of salt tolerance.关键词
小麦/粗厚山羊草细胞质(D2型)/细胞质遗传效应/耐盐性Key words
Wheat/Ae. crassa cytoplasm (D2-type)/Genetic effect of cytoplasm/Salt-tolerance分类
农业科技引用本文复制引用
刘春光,侯宁,刘立科,刘根齐,吴郁文,张翠兰,张炎..异源细胞质小麦D2-鉴26的耐盐特征及其遗传基础[J].作物学报,2005,31(8):1007-1013,7.基金项目
Supported by Chinese National Natural Science Foundation (30370880), National 863 Program (2002AA207004) and CAS Program (KSCX2-SW-304). （30370880）
