Genetic and biochemical analyses identify a major locus, GH-PA1, underlying pollen carotenoid accumulation and pigmentation in upland cotton.

ABSTRACT: The cotton genus Gossypium shows wide variation for pollen color. Pima cotton (G. barbadense), which is known for premium fiber quality, is characterized by yellow/orange pollen, while the widely cultivated upland cotton (G. hirsutum) usually has cream-colored pollen. We conducted a genome-wide association study using a diversity panel of 136 accessions of upland cotton genotyped with the cottonSNP63K array and identified three significant marker-trait associations for pollen color within a 226 kb region on chromosome A05. Phenotyping of two recombinant inbred line (RIL) populations derived from the parental accessions DES 56 (white pollen), and Sealand #2 and Southland M1 (yellow pollen) at the F1 and F5 generations showed that the yellow pollen color was controlled by a single dominant g

SUBMITTER: Pettit N 

PROVIDER: S-EPMC12675273 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature