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Effects of growing resistant potatoes with gene H 1 from Solarium tuberosum ssp. andigena on populations of Heterodera rostochiensis British pathotype A
Author(s) -
TRUDGILL D. L.,
PARROTT DIANA M.
Publication year - 1973
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1973.tb01310.x
Subject(s) - biology , heterodera , hybrid , larva , population , pest analysis , botany , resistance (ecology) , horticulture , agronomy , nematode , ecology , demography , sociology
SUMMARY Pure pathotype A populations of Heterodera rostochiensis produce a few females on ex andigena hybrids with the H 1 gene for resistance. As the proportion of larvae able to become female on ex andigena hybrids was not increased by reproducing the nematodes on such hybrids for 3 years, these females seem not to be genetically different from the rest of the population. The proportion increased rapidly when the initial population contained a few pathotype (species) E nematodes but again no increase in the proportion of pathotype (species) A larvae able to become female on ex andigena was detected and pathotype E replaced pathotype A.