Yield and Related Components of Cotton (Gossypium hirsutum L.) Efected by Chlorophyll Contents | Pakistan Journal of Agricultural Research 2022

Muhammad Rizwan Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Jehanzeb Farooq Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Amjad Farooq Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Muhammad Farooq Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan; School of Biology and Environmental Science, Science and Engineering Faculty, Queensland University of Technology,Brisbane,Australia

Ghulam Sarwar Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Muhammad Nadeem Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Muhammad Riaz Wheat Research Institute, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Muhammad Rafique Shahid Cotton Research Institute,Multan,Pakistan

Hafiz Ghazanfar Abbas Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

Muhammad Kashif Shahzad Sarwar Cotton Research Station, Ayub Agricultural Research Institute,Faisalabad,Pakistan

| To study the relationship amongst leaf chlorophyll contents, yield and related parameters, 18 advanced genotypes of cotton were tested in a trial at Cotton Research Station, Faisalabad. Highly significant results were noticed in the analysis of variance. Further investigation in correlation analysis revealed that there was comendable positive association among leaf chlorophyll contents, seed cotton yield (SCY ), No. of sympodia, seed index and boll weight(g). Principal Component Analysis (PCA) demonstrated that only 02 out of 08 PCs showed eigen value greater than 1. The contribution of first two PCs in total variability was 70.77% amongst the genotypes assessed for chlorophyll contents, seed cotton yield and related traits. Remaining six components contributed very less viz. 30.8% in total variability. Valuable positive factor loadings on PC I was attributed by seed cotton yield, chlorophyll contents, boll weight, No. of sympodia, seed index and Ginning out turn (GOT)%. In PC II, maximum positive contribution was presented by plant height whereras maximum negative factor loadings were showed by GOT % and seed index. PCA also confirmed the results of correlation studies by presenting significant positive association among leaf chlorophyll contents, seed cotton yield, No. of sympodia, seed index and boll weight. These results will be helpful in further breeding strategies for selection of genotypes with respect to chlorophyll contents, yield and associated traits.