Access the full text.
Sign up today, get DeepDyve free for 14 days.
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
AbstractA diverse collection of seven Meloidogyne hapla isolates, all identified ascytological race A, were studied for their host-parasite interactions withseveral common bean (Phaseolus vulgaris L.) genotypes. The M. hapla isolatesshowed significant (P < 0.01) differential interactions of ability toreproduce on resistant common bean cultivars. Based on the nematode egg massproduction on susceptible cv. Yolano and resistant cv. NemaSnap beans, theisolates formed three groups. Four isolates produced many egg masses on bothsusceptible and resistant cultivars and were defined as virulent toresistance in cv. NemaSnap. Two isolates produced many egg mass numbers onsusceptible cv. Yolano, but very few on resistant cv. NemaSnap, and weredefined as avirulent to the resistance in NemaSnap. One isolate, WI,produced fewer egg masses on susceptible cv. Yolano than on resistant cv.Nemasnap and was defined as virulent to resistance in cv. NemaSnap. Thethree types of host-parasite interaction indicated a transagonal reactionfor a gene-for-gene relationship between M. hapla and resistant common bean(cv. NemaSnap). Analysis of an F2 population from crosses between cultivarsNemaSnap and Yolano revealed a single dominant gene pattern of segregationfor a major form of resistance in cv. NemaSnap. According to an allelismtest, the resistance to M. hapla in cv. NemaSnap was not derived from theline PI165426, which is the pedigree source of M. incognita resistance incv. NemaSnap. However, PI165426 was found to have M. hapla resistance butmay not be homozygous for these factors.
Nematology – Brill
Published: Jan 1, 2003
Keywords: AVIRULENCE; ROOT-KNOT NEMATODE; GENE-FOR GENE INTERACTION
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.