Chromosomal duplication and Mendelian phenomena in Datura mutants
Chromosomal duplication and Mendelian phenomena in Datura mutants
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DOI：
10.1126/science.52.1347.388
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发表时间：
1920-07-01
期刊：
影响因子：
56.9
通讯作者：
Farnham, ME
中科院分区：
文献类型：
--
作者：
Blakeslee, AF;Belling, J;Farnham, ME
这12个有一定的特点，使他们有别于正常的股票，他们从产生。它们的生长比正常植株弱，花粉不育程度相对较高，而正常植株的花粉相对较好，在未染色条件下检查时，明显不完整的花粉粒少于5%。这12个品种的繁殖行为是特殊的，因为突变性状几乎完全通过雌性传递。通常，只有大约四分之一或更少的来自给定突变体的后代繁殖亲本突变体类型。花粉完全不能传递突变性状，或者只把它传递给一小部分后代。这是由于正常雌株与突变花粉杂交不产生突变后代或只产生一小部分突变后代，以及12个突变体中任何一个的花粉在繁殖突变体方面似乎都不比正常雌株的花粉更有效。
The twelve have certain characteristics which distinguish them from the normal stock from which they arose. They are of feebler growth than normals and have a relatively high degree of pollen sterility, while pollen from normals is relatively good with less than 5 per cent. obviously imperfect grains when examined in unstained condition. The breed-ing behavior of the twelve is peculiar in that the mutant character is transmitted almost entirely through the female sex.-Usually about one quarter or less of the offspring only from a given mutant reproduce the parental mutant type. The pollen entirely fails to transmit the mutant character, or transmits it only to a small percentage of its offspring. This is concluded from the fact that normal female plants crossed with mutant pollen pro-duce no mutant offspring or only a small per--centage, and from the fact that the pollen of any of the 12 mutants seems to be no more potent in reproducing the mutants than pollen from normals.