摘要
为了对玉米品种耐盐性筛选、盐碱地玉米栽培和耐盐育种提供理论参考,以发芽势、发芽率、根长和苗长等作为指标,用不同浓度的NaCl对9份不同玉米品种进行苗期耐盐性筛选的鉴定,分析盐胁迫对不同品种玉米种子萌发的影响。结果表明:30mmol/LNaCl处理下‘吉单519’和‘平全9’的根长比对照增加了31.17%和14.17%,与对照处理达到显著水平(P<0.05),说明低浓度的NaCl(≤30mmol/L)溶液对玉米的萌发有促进作用,提高了玉米种子的发芽率和根、芽的伸长,并且不同品种间表现出耐盐性有差异。最终得出,‘吉单519’和‘先玉335’对盐胁迫耐性强,可以作为耐盐品种广泛种植于盐分含量较高的土壤中。
The aim was to provide theoretical reference for selecting salt tolerant maize varieties, cultivating maize on saline-alkali soil and breeding salt tolerant species. In this study, 9 different kinds inbred lines of maize （Zea mays L.） were treated with different concentrations of NaCl solution. Germination energy, germination rate, the length of buds and roots were used as indicators to identify and classify the salt stress tolerance in the germination period. The results showed： 30 mmol/L NaCl treatment, rootlength of‘Jidan519’ and‘Pingquan 9’was 31.17% and 14.17% higher than 0 mmol/L treatment, P0.05. The study showed that the seedlings were promoted when concentration of NaCl （≤30 mmol/L） was comparatively low, germination rate, the length of buds and roots were increased. All the indicators reveal that‘Jidan 519’and‘Xianyu 335’ have a wider salt resistance, so we suggest these varieties can be widely planted in higher salinity soil.
出处
《中国农学通报》
CSCD
北大核心
2011年第33期34-39,共6页
Chinese Agricultural Science Bulletin
基金
公益性行业(农业)科研专项经费项目"松嫩平原中部盐碱化旱地节水控盐农业高效技术模式研究与示范"(200903001-06-6)
校企共建项目"生物有机肥修复盐碱地质量研究"(2011-7)
关键词
NACL
玉米
萌发期
耐盐性
NaCl
Zea mays L.
germination period
salt tolerance
