高诱1号及改良系对热带玉米种质的单倍体诱导研究

CAU Inducer and Improved Lines in Vivo Haploid Induction in Tropical Maize

以高诱1号及8份改良系作父本诱导6份热带玉米材料,考察诱导率及Navajo鉴定准确率,探讨高诱1号及8份改良系在热带玉米种质中的应用潜力。结果表明,高诱1号对热带玉米种质的诱导率为0.29%-2.74%,平均1.66%;Navajo鉴定准确率11.11%-100%,平均40.57%。8个改良系的平均诱导率1.80%-4.64%,平均Navajo鉴定准确率31.3%-53.6%。4个改良系在某些性状上优于高诱1号,诱导率提高2-3倍,子粒鉴定更准确,植株更高、雄花更发达等农艺性状的改善更利于在热带种质的育种应用。

In order to evaluate the efficacy of CAU inducer and eight improved induce lines in tropical maize,these lines were used as male parents to cross with six tropical maize materials, the HIR and NIA was investigatedin this study. The result showed that the HIR of CAU inducer ranged from 0.29% to 2.74% with mean of 1.66%;NIA ranged from 11.11% to 100% with mean of 40.57%.The average HIR of eight improved induce lines rangedfrom 1.80% to 4.64%; the average NIA ranged from 31.2% to 53.6%. Four improved induce lines have some merits,i.e. 2-3 times HIR higher than CAU inducer, higher NIA, with higher plant height and more flourishing tassels mayfacilitate the application in tropical maize breeding.