Journal of the Korean Society of Tobacco Science (한국연초학회지)
- Volume 13 Issue 2
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- Pages.48-51
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- 1991
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- 1225-2131(pISSN)
Inheritance of Resistance to Potato Virus Y Vein- necrosis Strain of N. africana
N. africana의 감자바이러스Y 엽맥괴저 계통에 대한 저항성의 유전
Abstract
A program was initiated to transfer potato virus Y vein-necrosis strain resistance from N. africana to N. tabacum The Fl plants between the above species were self-sterile, but all amphidiploid plants from the Fl plants and backcrossed flowers, that is, the N. tabacum flowers crossed with amphidiploid were self-fertile. The parent, amphidiploid plants of Fl, F2 population of the amphidiploid and the backcrossed generation were screened for a resistance of potato virus Y vein-necrosis strain isolated in Korea. The Chi-square values for the F2 population of the amphidiploid and the backcrossed generation fitted 35: 1 and 5 : 1 ratios of resistant to susceptible for the potato virus Y vein-necrosis strain, respectively. Therefore, it was found that the resistance of N. tabacum for the potato virus Y vein-necrosis strain was controlled by a single dominant gene.
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