Interaction of virescent genes in upland cotton (Gossypium hirsutum L.): chlorophyll content

• Published in: Crop science Vol. 37; no. 4; pp. 1123 - 1126
• Main Authors: Zhang, T.Z, Pan, J.J, Xiao, S.H, Kohel, R.J
• Format: Journal Article
• Language: English
• Published: Madison, WI Crop Science Society of America 01-07-1997; American Society of Agronomy
• Subjects: Agronomy. Soil science and plant productions; ALLELES; Biological and medical sciences; Biology; Breeding schemes. Varia; CHEMICAL COMPOSITION; Chlorophyll; CHLOROPHYLLE; CHLOROPHYLLS; CLOROFILAS; Comparative studies; COMPOSICION QUIMICA; COMPOSITION CHIMIQUE; Cotton; FENOTIPOS; FEUILLE; Fundamental and applied biological sciences. Psychology; GENE; GENE INTERACTION; GENERATIONS; GENES; Genetic aspects; Genetics and breeding of economic plants; GOSSYPIUM HIRSUTUM; HEREDABILIDAD; HERITABILITE; HERITABILITY; HOJAS; INTERACCION DE GENES; INTERACTION GENIQUE; LEAVES; PHENOTYPE; PHENOTYPES; Plant breeding: fundamental aspects and methodology; TEXAS; Malvaceae; Allelism; Chlorophyll; Gene interaction; Genetic marker; Gene expression; Line (plant); Fiber crop; Homeologous chromosome; Tetraploidy; Progeny; Diploidy; Photosynthetic pigment; Dicotyledones; Angiospermae; Spermatophyta; Gossypium hirsutum; Locus
• ISSN: 0011-183X; 1435-0653
• DOI: 10.2135/cropsci1997.0011183X003700040015x

The interactions between the virescent genes v2 and v14 of cotton (Gossypium hirsutum L.) were determined and compared with other virescent genes. Single crosses were made among various virescent lines, and the progenies were tested from 1991 to 1994. Allelic tests established that v2 and v14 were nonallelic, but their F1 hybrid plants were vireseent, with phenotypic expression and chlorophyll content intermediate between the parents. In the F2 population, plants segregated into classes with various degrees of virescent expression from green, parental virescents, deep yellow, to chlorotic types with extremely low vigor. The chlorophyll content of functional leaves on the deep-yellow type (0.54-0.56) was less than one-half that of the parental virescent types (1.13-1.43). The interaction effect between v2 and V14 was prominently reflected in the reduced content of Cb and the high Ca/b ratio of the deep-yellow type. This complementary function can be due to the nondiploidized function of homoeologous loci of the G. hirsutum allotetraploid