不同水稻品种发芽期耐盐性评价
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摘要
为了鉴定、筛选适合黄河三角洲地区盐碱地种植的水稻品种,以东营地区收集的11个粳稻品种为材料,进行了不同盐(NaCl)浓度(0、5、10、12、15 g/L)胁迫种子发芽期的耐盐性鉴定和评价。结果表明,盐胁迫抑制种子发芽,并且随着盐浓度的提高抑制作用越显著;种子发芽率、发芽势及根长、芽长均受到盐胁迫抑制,尤其是当盐浓度超过15 g/L时,抑制作用极显著。以相对盐害率作为耐盐评价指标,筛选出发芽期耐盐性较强的水稻品种3个:临稻19、盐丰47和盐粳456(3级),耐盐性中等的两个:津稻263和淮稻5号(5级)。
In order to identify and screen out salt-tolerant rice varieties suitable for saline-alkali soil in the Yellow River Delta,11 japonica rice varieties collected from Dongying were used to evaluate the salt tolerance at seed germination stage under different salt concentrations( 0,5,10,12 and 15 g/L).The results showed that salt stress inhibited seed germination,and the inhibitory effect increased with the increase of salt concentration.Germination rate,germination energy,root length and shoot length were all inhibited by salt stress,especially at the salt concentration of ≥15 g/L.With the relative salt damage rate as the evaluation index of salt tolerance at germination stage,3 rice varieties with strong salt tolerance of the 3rd grade were selected,i.e.,Lindao 19,Yanfeng 47 and Yanjing 456.Jindao 263 and Huaidao 5 identified as the 5th grade were selected as the medium salt tolerance rice varieties.
In order to identify and screen out salt-tolerant rice varieties suitable for saline-alkali soil in the Yellow River Delta,11 japonica rice varieties collected from Dongying were used to evaluate the salt tolerance at seed germination stage under different salt concentrations( 0,5,10,12 and 15 g/L).The results showed that salt stress inhibited seed germination,and the inhibitory effect increased with the increase of salt concentration.Germination rate,germination energy,root length and shoot length were all inhibited by salt stress,especially at the salt concentration of ≥15 g/L.With the relative salt damage rate as the evaluation index of salt tolerance at germination stage,3 rice varieties with strong salt tolerance of the 3rd grade were selected,i.e.,Lindao 19,Yanfeng 47 and Yanjing 456.Jindao 263 and Huaidao 5 identified as the 5th grade were selected as the medium salt tolerance rice varieties.
引文
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[13]胡时开,陶红剑,钱前,等.水稻耐盐性的遗传和分子育种的研究进展[J].分子植物育种,2010,8(4):629-640.
[2]陈煜,杨燕凌,谢小芳,等.水稻耐盐相关基因的克隆及转化研究进展[J].中国农学通报,2010,26(11):23-27.
[3]王奉斌,张燕红,袁杰,等.新疆耐盐水稻种质资源的筛选[J].新疆农业科学,2009,46(3):501-505.
[4]胡宗英.不同盐碱胁迫对披碱草和紫花苜蓿种子萌发的影响[D].长春:吉林农业大学,2014.
[5]祁栋灵,韩龙植,张三元,等.水稻耐盐/碱性鉴定评价方法[J].植物遗传资源学报,2005,6(2):226-230.
[6]张秀双,魏晓敏,杨丽,等.水稻不同品种耐盐限度研究初报[J].北方水稻,2006(4):53-55.
[7]卢楠楠,闫丽华,郑崇珂,等.盐胁迫对水稻盐丰47和盐粳456生长和农艺性状的影响[J].作物杂志,2017(5):106-111.
[8]夏秀忠,张宗琼,杨行海,等.广西地方稻种资源核心种质的耐盐性鉴定评价[J].南方农业学报,2017,48(6):979-984.
[9]贺奇,王昕,马洪文,等.盐胁迫下粳稻种子发芽特性及耐盐性评价[J].中国稻米,2018(1):28-32.
[10]郭望模,傅亚萍,孙宗修,等.水稻芽期和苗期耐盐指标的选择研究[J].浙江农业科学,2004(1):30-33.
[11]李艳,马均,王贺正,等.水稻品种苗期抗旱性鉴定指标筛选及其综合评价[J].西南农业学报,2005,18(3):250-255.
[12]郭望模,傅亚萍,孙宗修,等.盐胁迫下不同水稻种质形态指标与耐盐性的相关分析[J].植物遗传资源学报,2003,4(3):245-251.
[13]胡时开,陶红剑,钱前,等.水稻耐盐性的遗传和分子育种的研究进展[J].分子植物育种,2010,8(4):629-640.