A non-destructive method of estimating leaf area and shoot dry mass in seedlings of coconut (Cocos nucifera) hybrids
1986
Shivashankar, S. | Kasturi Bai, K.V. | Vijayakumar, K. (Central Plantation Crops Research Inst., Kasaragod, Kerala (India))
Linear regression equations were developed to estimate the leaf area and the shoot dry mass of seedlings of five hybrid coconut varieties. The area of bifurcate leaves was best estimated by using leaf length and width in the regression equation (r square = 86.5 - 97.3%). In the case of young pinnate leaves, the linear measurement of four leaflets, i.e. the bifurcate portion and the whole leaf, were necessary to obtain precise estimates of leaf area (r square = 89.7 - 98.8%). Equations employing growth measurements namely, plant height, girth at collar and total number of leaves, gave close estimates of shoot dry mass. The equation could be used to estimate LA leaf area and SDM shoot dry mass of seedlings between six and 12 months of age.
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