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Production of the maize hybrid seed (Zea mays L) in the area of the town of Zaječar and its surroundings is limited by the ecological conditions. The loss of precipitations and high air temperatures during summer do not allow the hybrid seed of later vegetation to be produced. However, reduced amount of precipitations in the period of time from August to September, with favorable heat conditions, provide mature and healthy seed material only if the mother line has shorter vegetation period (FAO 200-300). This study examines the influence of the cob corn characteristics (cob length, number of seeds on a cob, mass of the seeds on a cob, number of the seeds in a fraction and germination of natural seed material of the maize hybrid ZPTC 196, seed. The applied correlative analysis involved all experimental conditions (two years, plant rows of the mother line, with watering and without watering). The results of the investigation showed mat the applied approach of correlative analysis for the fractional content of a cob corn (number and mass per fractions) almost owerwhelming, as far as the seed germination, is concerned, it was probable that all factors having influence on that characteristic were not included

Correlative connection between characteristics of mother line and hybrid seed ft generation of maize hybrid ZPTC196