南京农业大学学报2001，Vol.24Issue(2)：32-36,5.
恶疫霉生长速率与同宗配合性状的遗传与变异
Inheritance of growth rate and homothalic characteristics in Phytophthora cactorum
摘要
Abstract
The inheritance of biological characters including growth rate and homothallism of P.cactorum were studied in vitro.Six isolates obtained from different localities and host plants were tested.The results showed that there were at least three patterns on inheritance of growth rate in P.cactorum:1.Growth rate steadily inherited in both single-zoospore and single-oospore progenies,which indicated that the genetic factors controlling growth rate in the isolates were homozygous.2.Growth rate steadily inherited in asexual progenies but showed obvious variation in selfed single-oospore progenies,which suggested that the character of the isolates were controlled by nuclear heterozygous genes.3.Growth rate showed variation in both single-zoospore and single-oospore progenies,but the variation of growth rate in selfed oospore progenies was significantly different from that in zoospore progenies,which suggested that the variation in asexual progenies might be controlled by cytoplasmic factors,moreover,the variation in selfed oospore progenies also associated with nuclear genetic factors.The results also showed that the homothallic character of all the tested isolates were steadily inherited in both asexual and sexual progenies,which suggested that the genetic factors controlling the character appeared to be homozygous.关键词
恶疫霉/线性生长速率/同宗配合性状/遗传与变异分类
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王建营,郑小波..恶疫霉生长速率与同宗配合性状的遗传与变异[J].南京农业大学学报,2001,24(2):32-36,5.
