早熟玉米成株期耐旱性分析

以4个常用的优良外引玉米自交系做母本,6个早熟的经过多年改良选育的玉米自交系作父本,采用NCⅡ不完全双列杂交设计,形成了24个杂交组合,以晋单32号及其亲本84-108-1、Mo17作为对照,对24个玉米杂交种及其亲本自交系成株期的形态指标性状、生育期性状、产量性状等方面进行了抗旱性的分析与评价,从而筛选出综合抗性较强的玉米杂交种及其亲本自交系材料,结果表明05-20-11 、MO17属于极强抗旱性自交系;05-20-9、3259为强抗旱性自交系;3259×05-13-2、早214×05-13-2、3259×08-17-2为极强抗旱杂交种;3259×05-20-9、早214×05-20-9、自209×05-13-2、自209×09-5-19为强抗旱性杂交种.

Analysis of Drought Tolerance of Early Maize in Adult Period

Using 4 introduced maize inbred lines as female parent, 6 early optional maize inbred lines as male, 24 hybrid combination was prepared by using NC 11 incomplete biserial hybrid design, with Jindan No.32, and its parents 84-108-1, Mo17 as control varieties, drought tolerance of adult period of form indicators traits, and production traits, and growing period traits of 24 maize hybrids and parents were compared and evaluated to select integrated highly-resistant maize hybrids and their parental inbred material.The results showed the 05-20-11 and Mo17 belonged to very strong drought-resistance of inbred lines; 05-20-9 and 3259 belonged to strong drought-resistance of inbred lines; 3259×05-13-2, early 214×05-13-2, 3259×08-17-2 were extremely drought-resistant hybrids; 3259×05-20-9, early 214×05-20-9, self-209~05-13-2, self-209×09-5-19 were strong drought-resistant hybrids.