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发现利用特定小黑麦(2n=56)进行回交,是获得孤雌无融合生殖的新途径之一。以鉴日—22×8318—5获得的典型雄性不育系BHr938是受隐性基因控制的孤雌生殖类型,两性分离代代相传,基因的可转移性、农艺性状的早代不分离表现说明具有专性兼性相互变化及存在单倍体无融合生殖的综合特性。从中已选出农艺性状良好的品系多个,个别品系固定了较强的杂种优势,如H938R—9的单株产量平均优势高达34.09%,超亲优势达22.91%。
Backcrossing with specific triticale (2n = 56) was found to be one of the new ways to obtain parthenogenetic apomixis. The typical male sterility line BHr938 obtained from Jian-22 × 8318-5 was a parthenogenetic type controlled by the recessive gene. The separation of sexes from generation to generation, the transfer of gene, the non-separation of agronomic traits With the characteristics of both sex and mutual change and the existence of haploid apomixis comprehensive characteristics. A number of lines with good agronomic traits have been selected. Individual lines have strong heterosis. For example, the average yield per plant of H938R-9 is as high as 34.09% and that of super-parents is 22.91%.