Resistance to Meloidogyne enterolobii and Meloidogyne incognita in Cultivated and Wild Cowpea
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چکیده
منابع مشابه
Dynamics of Meloidogyne incognita Virulence to Resistance Genes Rk and Rk in Cowpea.
The virulence index of three Meloidogyne incognita field isolates to the resistance gene Rk in cowpea was 0%, 75%, and 120%, with the index measured as reproduction on resistant plants as a percentage of the reproduction on susceptible plants. Continuous culture of the 75% virulent isolate on susceptible tomato for more than 5 years (about 25 generations) resulted in virulence decline to about ...
متن کاملRelationships Between Tolerance and Resistance to Meloidogyne incognita in Cotton.
The southern root-knot nematode, Meloidogyne incognita, is the most damaging pathogen of cotton in the United States, and both resistance and tolerance to M. incognita could be valuable management approaches. Our objectives were to evaluate advanced cotton breeding lines for resistance and tolerance to M. incognita and to determine if a relationship between resistance and tolerance exists. Repr...
متن کاملIsofemale Line Analysis of Meloidogyne incognita Virulence to Cowpea Resistance Gene Rk.
Isofemale lines (IFL) from single egg masses were studied for genetic variation in Meloidogyne incognita isolates avirulent and virulent to the resistance gene Rk in cowpea (Vigna unguiculata). In parental isolates cultured on susceptible and resistant cowpea, the virulent isolate contained 100% and the avirulent isolate 7% virulent lineages. Virulence was selected from the avirulent isolate wi...
متن کاملResponse of Cowpea Breeding Lines and Cultivars to Meloidogyne incognita and M. arenaria.
Twenty-four cowpea breeding lines and four cultivars were tested for resistance to Meloidogyne incognita in the greenhouse. Gall and egg mass ratings indicated a range of responses from susceptible to highly resistant. Five breeding lines - VS84-2, VS84-8, VS84-12, VS84-14, and VS84-22 - and the cultivar Erectset had gall and egg mass ratings comparable to the M. incognita-resistant cultivar Mi...
متن کاملInteraction of Meloidogyne javanica with Different Races of Meloidogyne incognita.
The interspecific interactions of Meloidogyne javanica with races 1, 2, 3, and 4 of M. incognita on tomato were determined. Impacts of the interactions on fecundity and morphometrics of females were also examined. Mutually inhibitory interactions occurred between M. javanica and the races of M. incognita, but the negative interactions did not reflect in plant growth. Numbers of root galls, egg ...
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ژورنال
عنوان ژورنال: HortScience
سال: 2021
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci15564-20