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Association of canopy temperature depression and membrane relative injury with seed and biological yield in chickpea (Cicer arietinum L.) genotypes under field conditions

Year: 2024
Type: article
Abstract: Twenty chickpea genotypes were screened for canopy temperature depression (CTD) and membrane relative injury (RI) at flowering, poding and grain-filling stages under natural field conditions at the Nuclear Institute for Food & Agriculture (NIFA), Peshawar, Pakistan in 2020-21 and 2021-22 crop growth seasons. Eight genotypes showed highest averaged CTD values of 4.2-5.5 °C, 3.9-4.8 °C and 4.3-4.8 °C across two seasons at flowering, poding and grain-filling stages, respectively. The same eight genotypes showed lowest average RI values ranging from 24.9-45.5%, 41.2-45.5% and 40.9-48.5% across two seasons at flowering, poding and grain-filling stages, respectively. These genotypes also produced average higher biological yield plant-1 (BYPP) ranging from 59.5 g to 70.4 g and highest seed yield plant-1 (SYPP) of 16.3 g to 20.2 g across 2020-21 and 2021-22. The CTD was significantly (P ≤ 0.01) and positively correlated with BYPP and SYPP with a strong correlation with SYPP (r = 0.9888). The RI had a negative correlation with BYPP and SYPP, being strongly negatively correlated (r = -0.9743) with SYPP. Regression analysis showed positive and negative linear relationship of CTD and RI, respectively, with BYPP and SYPP. A positive association of CTD was found with BYPP and SYPP with a strong association between CTD and SYPP (R2 = 0.977), whereas a strong negative association was found between RI and SYPP (R2 = -0.9489). Based on these results, CTD and RI may be utilized as positive indirect indicators to breed chickpea genotypes for better yield performance under natural environments with variable temperatures.
DOI: 10.56612/ijaaeb.v1i1.106
Language: English
Subfield: Plant Science
Open Access status: diamond
OpenAlex ID: W4402803575
FWCI: 0.67
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Cited by: 3
Related to: 10