Microsatellite markers associated with lint percentage trait in cotton, Gossypium hirsutum

This study was conducted in order to obtain information on genetic variation in populations rated as superior cotton (Gossypium hirsutum L.) varieties in Balittas Malang, Indonesia. The samples used 10 varieties of cotton Kanesia series and 2 other superior varieties that are LRA 5166 and ISA 205A. Indicators of genetic diversity are the number of alleles per locus, allele frequencies, and heterozygosity values. DNA was isolated from the leaves of 3- week-old seedlings using the CTAB method. Amplification was performed using 5 SSRs primer pairs of the JESPR series. The results showed five microsatellite loci, yielding 12 alleles with a size range of 80–500 bp, with an average number of alleles per locus of 4.60. The average values of heterozygosity of the five loci was high, at 0.71. Based on the number of alleles, allele frequencies and heterozygosity values, the genetic variation sampled in the superior cotton varieties studied here is quite high.

Download Full-text

Topical Applications of DSMA and MSMA in Irrigated Cotton

Weed Science ◽

10.1017/s0043174500050645 ◽

1971 ◽

Vol 19 (5) ◽

pp. 545-547 ◽

Cited By ~ 8

Author(s):

H. F. Arle ◽

K. C. Hamilton

Keyword(s):

Gossypium Hirsutum ◽

Cotton Yield ◽

Lint Percentage ◽

Fiber Fineness ◽

Boll Weight ◽

Repeated Applications ◽

Topical Applications

Single topical applications of monosodium methanearsonate (MSMA) affected cotton (Gossypium hirsutumL.) growth more than did similar disodium methanearsonate (DSMA) applications. There was usually no difference in yield among rates and dates with single applications of DSMA. Single applications of MSMA at later dates and higher rates reduced yields. Repeated topical applications of MSMA reduced yields and affected boll weight, lint percentage, number of seed per boll, and fiber fineness as compared with these properties of cotton treated once with MSMA. Response of cotton to MSMA was related to the number of applications and rate of herbicide. Repeated applications of DSMA affected cotton yield, lint percentage, and number of seed per boll less than did MSMA.

Download Full-text

Competition of Four Morningglory(Ipomoeaspp.) Species with Cotton(Gossypium hirsutum)

Weed Science ◽

10.1017/s0043174500050372 ◽

1978 ◽

Vol 26 (5) ◽

pp. 484-488 ◽

Cited By ~ 49

Author(s):

R. H. Crowley ◽

G. A. Buchanan

Keyword(s):

Gossypium Hirsutum ◽

Cotton Fiber ◽

Fiber Length ◽

Competitive Ability ◽

The Other ◽

Lint Percentage ◽

Ipomoea Purpurea ◽

Pitted Morningglory ◽

Harvesting Efficiency

Tall morningglory [Ipomoea purpurea(L.) Roth.], pitted morningglory(I. lacunosaL.), ivyleaf morningglory [I. hederacea(L.) Jacq.] and entireleaf morningglory(I. hederaceavar.integruisculaGray) were compared for their competitive ability with cotton(Gossypium hirsutumL.) at weed densities of 4, 8, 16 and 32 weeds/15 m of row. Tall morningglory was the most competitive with yield reductions of as much as 88% at 32 weeds/15 m. The higher populations of tall morningglory also significantly reduced cotton populations, mechanical harvesting efficiency and lint percentage below that in the controls. Pitted morningglory densities twice that of tall morningglory were required to produce cotton responses similar to those induced by tall morningglory. Ivyleaf morningglory and entireleaf morningglory were almost identical in their competitive potentials and were less competitive than the other species evaluated. Their competitive ability was greatly reduced by disease. Competition from morningglories did not consistently affect cotton fiber micronaire, fiber length or strength.

Download Full-text