6 号染色体三体对玉米 9 号染色体重组的影响。
Effect of trisomy 6 on recombination in chromosome 9 of maize.
机构信息
Istituto di Genetica, Università di Milano, Italy.
出版信息
Genetics. 1975 Oct;81(2):253-62. doi: 10.1093/genetics/81.2.253.
The effect of an additional chromosome 6 upon recombination in chromosome 9 was investigated in maize. Trisomic 6 plants and their disomic sibs, heterozygous for three loci of chromosome 9 (yg, sh and wx), were testcrossed, and recombination in the regions yg-sh and sh-wx was analyzed. Single exchanges in the sh-wx region and double exchanges were more frequent in trisomics, particularly in female flowers.--In reciprocal testcrosses, higher male crossover rates were found for the sh-wx region, and the difference was enhanced in trisomic 6 plants.
在玉米中研究了额外的第 6 号染色体对第 9 号染色体重组的影响。三体型 6 号植株及其二倍体同胞，在第 9 号染色体的三个基因座（yg、sh 和 wx）上为杂合子，进行测交，并分析了 yg-sh 和 sh-wx 区域的重组。在三体型中，sh-wx 区域的单交换和双交换更为频繁，特别是在雌性花中。——在相互的测交中，sh-wx 区域的雄性交叉率更高，而在三体型 6 号植株中这种差异更为明显。
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