Understanding the critical host plant factors that determine oviposition behavior and survival of boll weevil, Anthonomus grandis grandis Boheman, on cotton, Gossypium hirsutum L., is important for developing successful pest management strategies. However, published information is both conßicting and limited regarding how different cotton fruit sizes affect boll weevil oviposition choices and s...

The aim of this study was to determine the general combining ability (GCA) parents and specific their hybrid combinations evaluate vigor F1 by investigating genetic structure lines testers. carried out in randomized complete blocks design with three replications trial site Nazilli Cotton Research Institute 2015 2016 years. 28 hybrids (4 7 testers) were used as material which developed from line...

Gossypium barbadense, famous for the superior quality of its fibers, is the second most cultivated cotton in the world. In order to determine the genetic basis of its agronomic traits, a linkage map was constructed and QTLs were analyzed. A total of 15,971 markers, including gSSRs, EST-SSRs, SRAPs, and SSCP-SNPs, were used to construct an intraspecific linkage map of G. barbadense with 124 F2 i...

The Mandelbrot set is arguably one of the most beautiful sets in mathematics. In 1991, Dave Boll discovered a surprising occurrence of the number π while exploring a seemingly unrelated property of the Mandelbrot set. Boll’s Þnding is easy to describe and understand, and yet it is not widely known — possibly because the result has not been rigorously shown. The purpose of this paper is to prese...

The components of lint yield in cotton are the number of plants per acre, the number of bolls per plant, the number of seeds per boll, and the number of fibers per seed. This list may be reduced to the two essential components, i.e., the number of seeds per acre and the weight of fiber per seed. A great deal of attention has been paid to the first factor but the weight of fiber per seed has bee...

This study was conducted to investigate the effects of soil water deficit on insecticidal protein expression in boll shells of cotton transgenic for a Bt gene. In 2014, Bt cotton cultivars Sikang 1 (a conventional cultivar) and Sikang 3 (a hybrid cultivar) were planted in pots and five soil water content treatments were imposed at peak boll stage: 15% (G1), 35% (G2), 40% (G3), 60% (G4), and 75%...

Understanding the critical host plant factors that determine oviposition behavior and survival of boll weevil, Anthonomus grandis grandis Boheman, on cotton, Gossypium hirsutum L., is important for developing successful pest management strategies. However, published information is both conßicting and limited regarding how different cotton fruit sizes affect boll weevil oviposition choices and s...

irrigation water and nitrogen fertilizer are two important factors in increasing the yield and yield components of cotton. in order to evaluate effects of irrigation methods, various levels of water and nitrogen fertilizer on yield and yield components of cotton were studied at hashemabad cotton research station of gorgan in 2008. the experiment was conducted in split-split plots design with th...

in this study six genotypes of upland cotton (g. hirsutum l.) were crossed in a half diallel (6×6) mating fashion. the parents and f1s were planted in a complete randomized block design with three replications at the hashemabad cotton research station (gorgan) in 2005. cotton yield and some agronomic traits were evaluated. analysis of variance showed that differences due to genotypes were signi...

Moisture is a significant component in cotton growth and yield, but stress the main factor limiting crop productivity since it has negative impact on cotton's ability to produce high-quality fiber as well square/boll lint output. Reduced water availability during development of bolls could lead drastically decreased yield. Four genotypes (MNH-1020, FH-114, BH-178 CIM-602) were grown under regul...