摘要
从已收集保存48个国家的3000多份红花种质资源中筛选的15份抗旱种质为材料,对其植株形态、产量构成因素等8个性状进行田间观测,观测项目包括物候期、植物学特征特性、生长势、抗逆性等。以抗旱系数和抗旱指数作为主要评价指标,评价其抗旱适应性、稳产性和丰产性。结果表明:在干旱处理条件下,不同类型种质的抗旱性有差异,不同性状受干旱影响程度也不同,其中YN-9mof,YN-4mf,YN-19mof表现出较对照高的分枝数、单株果球数、千粒重、单株产量和小区产量,说明这类种质材料具有较好的耐(抗)旱性,稳产性好,适宜在旱地种植和作为抗旱基因材料加以利用。试验结果证明在不同类型的红花种质资源中存在丰富的抗旱多样性,是红花抗旱育种的重要基因源。
Fifteen safflower varieties selected among more than 3 000 varieties from 48 countries were evaluated to idendify their drought resistance at dry-hot valley in Yuanmou,Yunnan,China.Their 8 traits such as morphology,phenophase,growth potential,antireversion force and yield were recorded under drought stress.Drought resistance was scored by both drought resistant coefficient（DRC） and drought resistant index（DRI） to evaluate the adaptability of drought,yield stability,and reliability.The results show there was a difference of drought resistance among germplasms,and different impact extents for different characters under drought stress.Some varieties,YN-9mof,YN-4mf,and YN-19mof are the dependable crops with strong drought resistance and good adaption under drought stress,which can be used for new cultivars breeding and production in dry land,since their number of branches,number of fruits per plant,1000-seed weight,yield per plant,and yield per plot were higher compare with control.There are plenty of diversity of drought resistance among safflower germplasms.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第1期177-181,共5页
Agricultural Research in the Arid Areas
关键词
红花
种质资源
抗旱性
鉴定评价
safflower
germplasm
drought resistance
evaluation
