Productivity of corn hybrids of different vegetative cycle. 2: Leaf size and estimation of diverse leaf area indexes
1993
Luchsinger L, Alfredo (Universidad de Chile, Santiago (Chile). Fac. de Ciencias Agrarias y Forestales)
The behaviour of 23 corn hybrids of different vegetative cycle was studied based on total number of leaves, leaves below and above the ear, leaf area indexes (LAI's), and leaf length and width measured in different ways. The LAI's considered were as follows: ear leaf, leaf average, sum of all the leaves, sum of leaves above and bellow the ear and eighth leaf. For leaf length and width determinations, the ear leaf and the average of all leaves were used. The results indicate that both the year and the locality influenced the variations shown in the different variables. The LAI's and leaf size showed variations between them and also varied within a same hybrid. The maximum LAI was obtained by the forage hybrids Antumapu 1 (4.37) and Antumapu 2 (3.64) by use of eight leaf. In hybrids JX-7790, JX-178, T-289s and P-3377, the LAI's were very similar in their values. The most significant interaction was year/treatment, with the 1986/87 season having the higher values and the greater value fluctuations. The forage hybrids Antumapu 1 and 2 had the greatest leaf sizes
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