VARIABILITY OF FELIX MAIZE COBS MORPHOLOGY IN CONTRASTING CLIMATE CONDITIONS
DOI:
https://doi.org/10.1199/0t9hyx21Keywords:
grains, Felix, maize, cobs, variabilityAbstract
Currently, maize plants know permanent evolutions of productive potential, quality, different resistances, etc. The morphology of the plant in general, but also the cobs express true productive performances. However, the expression of the morphological characters of the cobs is closely related to the natural provision of water. Being a moisture-loving plant, it frequently encounters periods of deficiency, especially during the period of deposition of dry matter in the grains. The intensity of these periods of drought causes some depressions in the expression of the morphology of the stylets and grains respectively. In the present research, the cobs of the Felix hybrid obtained in three different years are compared, namely one with a dry background, one intermediate and another relatively normal, but in all three years there were periods with obvious accents of drought. From the data obtained, the cobs affected by the drought were 2 cm shorter in length and 0.5 cm shorter in thickness. Cob weight was reduced by 70 g, the number of kernels per cob was reduced by 35, and kernel mass was also reduced by 65 g. The kernel yield of cobs was reduced by 1 %. The grain sizes showed decreases of 1 mm in length, the width remained about the same, and the grain thickness was less by 0.4 mm. The mass of one thousand grains decreased by 90 g.References
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