The present studies clearly indicated that expressivity of some the genes was changed due to simulated drought conditions. root increases in length response thus utilizes more photosynthates changing sink and ultimately reducing shoot growth. shift growth morphological development system are under genetic control but may be modified by environmental influences. To screen out tolerant susceptibl...

We investigated the role of ethylene in the response of cotton to high temperature using cotton genotypes with genetically interrupted ethylene metabolism. In the first experiment, Sicot 71BRF and 5B (a lintless variant with compromised ethylene metabolism) were exposed to 45°C, either by instantaneous heat shock or by ramping temperatures by 3°C daily for 1 week. One day prior to the start of ...

Cotton germplasm was analyzed to investigate its potential for developing water stress tolerance in varieties in the future. Four tolerant (NIAB-78, CIM-482, BH-121, and VH-142) and four susceptible (CIM-446, FH-1000, FH-900, and FH-901) lines were identified of 50 accessions based on their seedling root length. A complete set of diallel crosses among eight selected genotypes was subjected to g...

The aim of this work was to answer the following question: can influential points modify recommendation genotypes, based on regression methods, in presence genotype × environment (G E)? Therefore, we compared parameters adaptability and stability three methodologies points. Specifically, were evaluated methods simple, non-parametric quantile (? = 0.50) regressions. dataset used corresponds 18 v...

Tolerance to drought in plants is not a simple trait, but a complex of mechanisms working in combination to avoid or to resist water deficit. Genotypes that differ in tolerance to water deficit may show qualitative and quantitative differences in gene expression when submitted to drought periods. Four cotton (Gossypium hirsutum L.) genotypes (Siokra L-23, Stoneville 506, CS 50 and T1521) with c...

Climatic variability, typified by erratic heavy-rainfall events, causes waterlogging in intensively irrigated crops and is exacerbated under warm temperature regimes on soils with poor internal drainage. Irrigated cotton is often grown in precisely these conditions, exposing it to waterlogging-induced yield losses after substantial summer rainfall. This calls for a deeper understanding of mecha...