Author(s):

SB Patil, CP Mansur, PM Gaur, SR Salkinkop and SC Alagundagi

Abstract: The physiological and agrometeorological indices are the most precise and straightforward method to evaluate the contribution of different processes in plant development and prediction of yield. The field experiment conducted at ICRISAT, Patancheru, for two years. The results of pooled data revealed that the genotype JG-11 recorded higher SPAD values (62.27 and 63.42 at 30 and 60 days after sowing, respectively), soil moisture content (13.88%) and light absorption ratio (86.44%) and lower light transmission ratio (13.56%) as compared to tall/erect chickpea genotypes. Whereas, tall/erect genotype ICCV-11604 recorded a higher leaf relative water content (66.57 and 32.26%, respectively) at 40 and 70 days after sowing. The indices like SPAD value, leaf relative water content, and soil moisture content progressively and significantly decreased with an increase in plant density to either 20 percent or 40 percent higher than normal, and it was higher with normal plant density of 3.33 lakh ha^-1. On the contrary, the light absorption ratio increased with an increase in plant density as evidence of decreased light transmission through the plant canopies. A higher density of 4.66 lakh ha^-1 noticed a higher light absorption ratio and lowered light transmission ratio (82.03 and 17.97%, respectively). However, the interaction effect of genotype and plant densities on relative water content, light absorption ratio, light transmission ratio, and soil moisture content found significant, but chlorophyll content found not significant. These indices play an important role in the final contribution to the crop yield, which helps in the selection of suitable genotypes and planting density for maximizing the chickpea production.

DOI: 10.22271/phyto.2020.v9.i5h.12274

Pages: 523-530  |  896 Views  326 Downloads

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