PJB-2023-381
LEAF AREA ESTIMATIONS OF MUNGBEAN VARIETIES THROUGH NON-DESTRUCTIVE LINEAR METHOD
A.H.M. Motiur Rahman Talukder
Abstract
Abstract: An endeavor was made to quantify the area of trifoliate leaves of Mungbean (Vigna radiata L.) cultivars using linear measurements of the maximum length and width of terminal leaflets. This study was carried out in 2022 over the course of two successive growing seasons, Kharif I and Kharif II. Regression equation and correction factor (CF) approaches were employed in this investigation. In terms of the correction factor, the leaf area didn't vary meaningfully among the varieties and sampling stage under both growing seasons. So, a general regression equation Y = 1.602X + 11.57, (r2 = 0.895) and Y= 1.844X+10.79, (r2=0.916) was developed during Kharif I and Kharif II growing seasons respectively. Where, X=L×W. Where, L and W, are the maximum length and width of terminal leaflets of trifoliate leaf. Y= leaf area of trifoliate leaf. But leaf morphology (shape and size) varied for the genetic variability. So, we developed contrasting equation irrespective of newly developed Mungbean varieties viz. BARI Mug-6; BARI Mug-7 and BARI Mug-8; to estimate the leaf area of trifoliate leaflets from the produced maximum length and width of the terminal leaflets. Regarding varieties, generated equation for BARI Mug-6; Y=1.4907X + 23.577; BARI Mug-7; Y=1.6727X + 7.6618; BARI Mug-8; Y=1.5843X + 12.181. However, developed regression equation can be used to measure the whole trifoliate leaf area using value from the product of length and width of terminal leaf to save time, labor and plant population. The unique aspect of this study was that we created a variety-wise regression equation to measure the area of trifoliate leaf of mungbean crops.
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