论文部分内容阅读
近20年来,花药培养技术已成功地应用于许多作物的品种改良.但由于不同作物不同品种间花药培养力的差异很大,从而严重制约了这一技术的广泛应用.大量研究结果表明这种差异主要是由不同基因型引起的.一般而言,栽培稻中籼稻的愈伤组织诱导率明显低于粳稻.薛庆中等研究表明水稻愈伤组织诱导率是一个以加性作用为主的可遗传的特性.吴传银和陈英应用双列杂交对粳稻花药培养基因型的差异作了研究,指出在愈伤组织诱导率的基因作用方式中加性和非加性作用都很重要.而Quimio和Zapaia指出水稻花药培养力是由几个隐性基因控制的.这些研究结果的不同暗示了愈伤组织诱导率的遗传复杂性.本研究利用一对培养力相差很大的典型籼粳品种作为亲本,对杂种F_1经花药培养产生
In recent 20 years, anther culture technology has been successfully applied to many varieties of crop improvement, but due to the different cultivars of different varieties of anther culture power is very different, which seriously hampered the widespread application of this technology.A large number of studies have shown that this Differences are mainly caused by different genotypes.In general, the induction rate of callus of indica rice in cultivated rice is obviously lower than that in japonica rice.Secondly, the research on the callus induction rate of rice is an additive effect Wu Chuan-Yin and Chen Ying investigated the genotypic difference of japonica anther culture genotypes by using two-line crosses, and pointed out that both additive and non-additive effects are important in callus induction rate while Quimio and Zapaia pointed out that the ability of rice anther culture to be controlled by several recessive genes.The differences of these results suggest the genetic complexity of the callus induction rate.This study used a pair of typical indica and japonica varieties with very different culture power as parents , Hybrid F_1 anther culture produced