African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6862

Full Length Research Paper

Determination of the best cotton cultivars and selection criteria to improve yield in Gorgan climatic region

Borzo Kazerani
Department of Agriculture, Gorgan Branch, Islamic Azad University, Gorgan, Iran.
Email: [email protected]

  •  Accepted: 21 December 2011
  •  Published: 19 March 2012


The purpose of this research was to introduce cultivars of high products in Gorgan region climatic 
condition and study the interrelationships between the seed cotton yields and several traits of 8 cotton 
genotypes at Plant Institute, Gorgan, Iran. The experimental design was a randomized complete block 
design with four replications. A positive significant (P<1%) correlation was observed between yield and 
weight of seed cotton in first harvest. Stepwise regression and path analysis showed that the weight of 
seed cotton in first harvest, and the number of monopodial branches and weight of seed cotton in 
second harvest could explain the maximum variations of yield (R2
= 0/963). The weight of seed cotton in 
first harvest had the highest direct effects on yield/plant (P = 1/087). Due to their high direct and/or 
indirect effects on yield, the weight of seed cotton in both the first and second harvest can be used as 
selection criteria to identify the high yielding genotypes. The result of lint quality showed that genotype 
Siokra from the view point of lint percentage, lint length, lint homogeneity, lint resistance and fiber 
strength has a better quality than Sahel cultivar.
Key words: Cotton, seed cotton yield, correlation, stepwise regression, path analysis, lint quality