Peiretti, R.A. and Amini, I. and Weibel, D E and et al, .
(1980)
Relationship of "bloomless" (bm bm) sorghum to greenbug resistance.
Crop Science, 20 (2).
173-176 .
Abstract
Pot-grown plants in the F1 and F2 generations from crosses between Shallu Grain or IS809 (both tolerant of Schizaphis graminum) and RWD3Weskan (a bloomless mutant) were evaluated in the greenhouse, along with plants of the parental lines and of the susceptible control line, RS610, for presence or absence of waxy bloom on leaf sheaths, and many of the lines were evaluated for components of resistance to S. graminum. The bloomless character was found to be controlled by a single recessive gene. Tolerance to damage in Shallu Grain and IS809 was inherited independently of the bloomless trait, and only some of the bloomless F2 plants exhibited a comparable degree of tolerance. Bloomless plants showed only slightly more of an antibiotic effect on s. graminum than did RS610 plants and were much less effective than IS809. The insects were found to have a significant nonpreference for RWD3Weskan, relative to RS610, in plants over 70 days old, but this difference was not evident in seedlings
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