甘蔗属次生基因库到初生基因库的种质转移。

Transfer of germ plasm from the secondary to the primary gene pool in pennisetum.

机构信息

University of Georgia, Coastal Plain Experiment Station, USDA-ARS, 31793, Tifton, GA, USA.

出版信息

Theor Appl Genet. 1990 Aug;80(2):200-4. doi: 10.1007/BF00224387.

PMID:24220896

Abstract

Germ plasm from the A'-genome of Pennisetum purpureum Schum. (A'A'BB) of the secondary gene pool was transferred to cultivated pearl millet (AA) [P. glaucum (L.) R. Br.] by pollinating cytoplasmicnuclear male-sterile (cms) pearl millet with fertile allohexaploid pearl millet x P. purpureum hybrids (AAA'A'BB). Certain allohexaploids used as pollinators on cms pearl millet resulted in 14-chromosome diploid pearl millet progenies. Three types of diploid pearl millet plants were produced in addition to the expected 28-chromosome AAA'B-genome plants: (1) cms plants with only the A-genome, (2) cms plants with the A- and A'-genomes, and (3) fertile plants with the A- and A'-genomes. The latter group has allowed the utilization of genes for fertility restoration, stiff stalk, maturity, height, and morphological characteristics from the A'-genome of P. purpureum in the pearl millet breeding program. Production of monoploid gametes by the allohexaploids appeared to be genetically controlled.

摘要

从次级基因库的 A'-基因组中转移到栽培珍珠粟（AA）[P. glaucum（L.）R. Br.]的细胞质核雄性不育（cms）珍珠粟花粉与可育异源六倍体珍珠粟 x P. purpureum 杂种（AAA'A'BB）的 A'-基因组的 Pennisetum purpureum Schum.（A'A'BB）的生殖质。某些用作 cms 珍珠粟花粉源的异源六倍体导致 14 染色体二倍体珍珠粟后代。除了预期的 28 染色体 AAA'B-基因组植物外，还产生了三种类型的二倍体珍珠粟植物：（1）仅具有 A-基因组的 cms 植物，（2）具有 A-和 A'-基因组的 cms 植物，和（3）具有 A-和 A'-基因组的可育植物。后一组允许在珍珠粟育种种群中利用来自 P. purpureum 的 A'-基因组的育性恢复、硬茎、成熟、高度和形态特征的基因。异源六倍体产生单倍体配子似乎受到遗传控制。