Effect of KNO3‐Priming on Agronomic, Physicochemical and Fibre Attributes of Cotton (Gossypium hirsutum L.) Under Saline Conditions DOI
Ghulam Abbas Narejo, Ameer Ahmed Mirbahar, Sanaullah Yasin

и другие.

Journal of Agronomy and Crop Science, Год журнала: 2024, Номер 210(6)

Опубликована: Ноя. 3, 2024

ABSTRACT Salinity stress presents a challenging dilemma for plant growth and development. It disrupts cotton ( Gossypium hirsutum L.) yield through an immediate osmotic slower ionic phase, ultimately diminishing its fibre quality. Seed priming, low‐cost seed pre‐treatment, mitigates these effects by triggering prior metabolic processes subsequent gene expression. This pioneering work aimed to improve agronomic, physicochemical parameters characteristics in genotypes (GH‐Baghdadi GH‐Mubarak) potassium nitrate (KNO 3 ) mediated osmopriming (1.25% 1.5% conc.) 15, 20 25 h, along with un‐primed control under saline field conditions. The randomised complete block design experiment triplicate was conducted 2019 2020 at the soil electrical conductivity (extract) (EC e 9.44 dS m −1 investigate optimal priming media duration. results showed that salinity impaired agronomic experiment. However, KNO h significantly improved contributing components both genotypes. Maximum values chlorophyll (Chl) b were recorded 1.50 0.90 mg g fresh weight (FW), respectively, this treatment. Similarly, chlorophyll‐ fluorescence (Chl‐ FPs), such as maximum quantum of photosystem II Fv/F (0.83), effective PSII (Φ (0.76) photochemical quenching coefficient qP (0.85), indicated light harvesting, electron transport photosynthetic capacity. Furthermore, net rate P n increased 19.65 mmol CO 2 −2 s , while stomatal conductance reached 28.39 same A strongly positive correlation found between chl‐ FPs yield. Enzymatic activities, including catalase (CAT) 2.17 unit superoxide dismutase (SOD) 1.05 peroxidase (POD) enhanced, leaf (K) (14.3 dry [DW]) calcium (Ca) (6.7 DW), particularly GH‐Mubarak. Seed‐cotton (SCY) 5274 kg strength (FS) 31.3 thousand pounds per square inch (tppsi), ginning out‐turn (GOT) 45% micronaire value (4 μg in. decreased, indicating fineness. Correlation analysis revealed strong traits, gas exchange characteristics, content Chl‐ FPs, which are associated SCY characteristics. In conclusion, seeds is promising strategy mitigating enhancing attributes leading

Язык: Английский

Effect of KNO3‐Priming on Agronomic, Physicochemical and Fibre Attributes of Cotton (Gossypium hirsutum L.) Under Saline Conditions DOI
Ghulam Abbas Narejo, Ameer Ahmed Mirbahar, Sanaullah Yasin

и другие.

Journal of Agronomy and Crop Science, Год журнала: 2024, Номер 210(6)

Опубликована: Ноя. 3, 2024

ABSTRACT Salinity stress presents a challenging dilemma for plant growth and development. It disrupts cotton ( Gossypium hirsutum L.) yield through an immediate osmotic slower ionic phase, ultimately diminishing its fibre quality. Seed priming, low‐cost seed pre‐treatment, mitigates these effects by triggering prior metabolic processes subsequent gene expression. This pioneering work aimed to improve agronomic, physicochemical parameters characteristics in genotypes (GH‐Baghdadi GH‐Mubarak) potassium nitrate (KNO 3 ) mediated osmopriming (1.25% 1.5% conc.) 15, 20 25 h, along with un‐primed control under saline field conditions. The randomised complete block design experiment triplicate was conducted 2019 2020 at the soil electrical conductivity (extract) (EC e 9.44 dS m −1 investigate optimal priming media duration. results showed that salinity impaired agronomic experiment. However, KNO h significantly improved contributing components both genotypes. Maximum values chlorophyll (Chl) b were recorded 1.50 0.90 mg g fresh weight (FW), respectively, this treatment. Similarly, chlorophyll‐ fluorescence (Chl‐ FPs), such as maximum quantum of photosystem II Fv/F (0.83), effective PSII (Φ (0.76) photochemical quenching coefficient qP (0.85), indicated light harvesting, electron transport photosynthetic capacity. Furthermore, net rate P n increased 19.65 mmol CO 2 −2 s , while stomatal conductance reached 28.39 same A strongly positive correlation found between chl‐ FPs yield. Enzymatic activities, including catalase (CAT) 2.17 unit superoxide dismutase (SOD) 1.05 peroxidase (POD) enhanced, leaf (K) (14.3 dry [DW]) calcium (Ca) (6.7 DW), particularly GH‐Mubarak. Seed‐cotton (SCY) 5274 kg strength (FS) 31.3 thousand pounds per square inch (tppsi), ginning out‐turn (GOT) 45% micronaire value (4 μg in. decreased, indicating fineness. Correlation analysis revealed strong traits, gas exchange characteristics, content Chl‐ FPs, which are associated SCY characteristics. In conclusion, seeds is promising strategy mitigating enhancing attributes leading

Язык: Английский

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