摘要
试验选取300份春小麦品种,1988年在北京地区的自然条件下进行抗旱性鉴定.结果表明,利用反复干旱法测定的存活率是准确有效的抗旱性鉴定指标之一.抗旱性强的春小麦品种具有细胞膜比较稳定、积累干物质较多、保水力强等特点;叶片离体6小时后的失水率、相对电导率和叶片干鲜比是鉴定种质资源抗旱性的生理指标.甘肃省、黑龙江省、内蒙古自治区3个生态地区分布着较多的春小麦抗旱品种.
The drought resistance of 300 spring wheat varieties was evaluated under natural environment of Beijing in 1988. The results showed that the survival rate after repeated drought was a fairly reliable index for drought resistance evaluation; the varieties form higher drought resistant ecological areas had comparatively stable cell membrane, higher dry matter accumulation and stronger water-holding power; the leaf water-losing rate after excision from plant for six hours, the relative electric conductivity of leaves and the ratio of dry weight to fresh weight of leaves were considered to be convenient and reliable physiological methods for drought resistance evaluation of germplasm resources;there were many drought resistant spring wheat varieties in the three ecological areas-Kansu province, Heilongjiang province and Nei Monggol Autonomous Region.
出处
《华北农学报》
CSCD
北大核心
1990年第4期35-40,共6页
Acta Agriculturae Boreali-Sinica
关键词
春小麦
种质资源
抗旱性
小麦
Spring wheat
Ecological areas
Drought resistance
