The genetics of blackarm resistance - VIII.Gossypium barbadense
Two forms of resistance occur inGossypium barbadense: weak resistance, due to leaf hardening, is found in the Sea Islands, and strong resistance, due to the geneB5 fortified by minor genes, occurs in the perennial variety Grenadines White Pollen.B5 is variable in expression but, in general, the homozygotes show stronger resistance than the heterozygotes.B5 is additive in conjunction withB1, B2, B3 andB4 respectively.
Volume 101, 2022
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