Evaluatiing Late Planting Stress Tolerance Indices for Some Cotton Genotypes

2012 ◽  
Vol 16 (4) ◽  
pp. 61-74 ◽  
Author(s):  
K. M. A. Baker ◽  
A. B. A. El-Fesheikawy ◽  
H. S. Khalifa
Keyword(s):  
Stress Tolerance ◽  
Late Planting ◽  
Cotton Genotypes ◽  
Planting Stress ◽  
Tolerance Indices

scholarly journals Performance of Early and Late Planting Cotton Genotypes under Agro-Ecological Conditions of Multan, Punjab, Pakistan

2021 ◽  
Vol 34 (3) ◽  
Author(s):  
Muhammad Iqbal ◽  
Muhammad Mahmood Iqbal ◽  
Saghir Ahmad ◽  
Athar Mahmood ◽  
Muhammad Akram ◽  
...  
Keyword(s):  
Late Planting ◽  
Ecological Conditions ◽  
Cotton Genotypes

scholarly journals EVALUATION OF DROUGHT TOLERANCE IN NEW COTTON CULTIVARS USING STRESS TOLERANCE INDICES

AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Minka KOLEVA ◽  
Valentina DIMITROVA
Keyword(s):  
Stress Tolerance ◽  
Block Design ◽  
Geometric Mean ◽  
Moisture Stress ◽  
Yield Potential ◽  
Tolerance Index ◽  
Effective Selection ◽  
Stress Environment ◽  
Stress Susceptibility ◽  
Tolerance Indices

Drought is a wide-spread problem seriously influencing production and quality ofcotton (Gossypium hirsutum L.), but development of resistant cultivars is hamperedby the lack of effective selection criteria. The objective of this study was toevaluate the ability of several selection indices to identify drought tolerant cultivarsunder different environmental conditions. Thirteen cotton cultivars were evaluatedunder both moisture stress (2016) and non-stress (2013) field environments using arandomized complete block design for each environment. Six drought toleranceindices including stress susceptibility index (SSI), stress tolerance index (STI),tolerance index (TOL), mean productivity (MP), geometric mean productivity(GMP) and mean harmonic productivity (HMP) were used. The significant andpositive correlation of yield of genotype under non-stress condition (Yp) and MP,GMP and STI showed that these indices were more effective in identifying highyielding cultivars under different moisture conditions. The results of calculatedgain from indirect selection in moisture stress environment would improve yieldbetter than selection from non moisture stress environment. Coton breeders should,therefore, take into account the stress severity of the environment in choosing anindex. The varieties Viki and Avangard-264 had the highest yields under non-stressconditions. Vega and Chirpan-539 varieties had a low yield potential and showed ahigh stress tolerance to drought.

scholarly journals EVALUATION OF COTTON (GOSSYPIUM SPP.) GERMPLASM FOR HEAT TOLERANCE UNDER NORMAL AND LATE PLANTING TIME

2020 ◽  
Vol 53 (3) ◽  
pp. 255-265
Author(s):  
Emine KARADEMIR ◽  
C. KARADEMIR ◽  
B. KOLAY ◽  
V. SEZENER ◽  
H. BASAL
Keyword(s):  
Heat Tolerance ◽  
Agricultural Research ◽  
Limiting Factor ◽  
Late Planting ◽  
Planting Time ◽  
Susceptibility Index ◽  
Cotton Genotypes ◽  
Heat Tolerant ◽  
Four Blocks ◽  
Heat Susceptibility Index

The objective of this study was to determine cotton (Gossypium ssp.) germplasm for heat tolerance under normal and late planting time. For this aiming 200 cotton genotypes and five check varieties (Gloria, SG 125, Flash, Ozbek 105 and Candia) were evaluated under two different temperature regimes and experiments were conducted according to the augmented design with four blocks. Field studies were carried out at the GAP International Agricultural Research and Training Center’s experimental area in Diyarbakır, Turkey, in 2016 cotton growing season. In the study heat susceptibility index was used for discriminate to the genotypes for heat tolerance. Genotypes were classified into four groups based on the heat susceptibility index. The results of this study indicated that five cotton genotypes (TAM 139-17 ELS, CIM-240, Haridost, MNH-990 and AzGR-11835) were in highly heat tolerant, 28 genotypes were found heat tolerant, 56 genotypes were in the moderately heat tolerant and other 120 genotypes were observed susceptible for heat tolerance. Based on the heat susceptibility index, five cotton genotypes can be used as parent for heat tolerance improvement in the cotton breeding program where high temperature is a limiting factor for seed cotton yield.

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