摘要
为选育耐盐碱水稻品种,以东北三省耐盐碱性不同的40份粳稻为试验材料,在3个盐碱胁迫处理(25、50、75mmol.L-1 NaHCO3)下进行芽期耐盐碱性筛选试验。结果表明:在同一盐碱胁迫处理下,不同水稻品种间表现耐盐碱程度不同;在不同盐碱胁迫处理下,随着盐碱处理浓度的增加,不同水稻品种的发芽率、芽长、根数、根长、干重呈下降趋势。通过试验筛选出长白10号、通88-7、农大3号、富源4号和通育318共5个耐盐碱性较强的水稻品种(系)。
In order to breed saline-alkaline tolerant rice variety,40 japonica rice cultivars of different saline-al- kaline tolerance, which were mainly planted in the northeastern three provinces, were taken as test materials to conduct screening test with three saline-alkaline treatments at the germination stage which the concentration of NaHCO3 were 25,50,75 mmol· L-1. The results indicated that under the same saline-alkaline treatment,the a- bility of saline-alkaline tolerance was different among different rice cultivars; under the different saline-alkaline treatments, with the increasing of concentration of NaHCO：~, the germination percentage, bud length, root num- ber, root length and dry weight of different rice varieties showed downward trend. Through the screening test, five stronger saline-alkaline resistant rice varieties （lines） were selected,which were Changbai No. 10,Tong88- 7,Nongda No. 3,Fuyuan No. 4 and Tong 318.
出处
《黑龙江农业科学》
2012年第8期6-11,共6页
Heilongjiang Agricultural Sciences
基金
"十二五"农村领域国家科技计划资助项目(2011BAD35B02-01)
国家科技支撑计划资助项目(2011BAD16B111)
关键词
东北粳稻
芽期
耐盐碱性
northeast japonica rice
germination stage
saline-alkaline tolerance
