Effect of seed source on seed vigour and field performance of the sorghum (sorghum bicolor. (L.) moench) cultivar tabat
2011
Abuelgasim, A.E., University of Kordofan, Kordofan (Sudan). Faculty of Natural Resources and Environmental Studies, Dept. of Crop Sciences | El-Dessougi, H.I., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture, Dept. of Agronomy
A set of laboratory tests and field experiments were conducted for two consecutive seasons (2009/10 and 2010/11) to investigate the effect of seed source on seed quality attributes of the sorghum cultivar Tabat. Simple correlation coefficients were calculated to determine the degree of association between the different vigour tests and seedling emergence under field conditions. Seeds were obtained from four locations: two rain fed (Damazin and Habeela) and two irrigated (Khashm El Girba and El Gezira). Data were collected on initial seed moisture content, 1000-seed weight, germination percentage, rate of germination, seedling shoot length, seedling root length, seedling shoot to root length ratio, seedling fresh weight, seedling dry weight, plant height, number of leaves per plant, leaf area per plant and plant fresh and dry weight. The results indicated that, under laboratory conditions, seed source had significant effect on seedling root length and fresh weight in the first season, on germination percentage and rate of germination in the second season and on seed moisture content and 1000 seed weight in both seasons. Significant differences were found in seedling shoot length and plant height under field conditions. Seeds from Habeela and Damazin performed well with regard to germination percentage, rate of germination and field seedling emergence. Also, seeds from the rain fed areas produced taller plants than those from irrigated areas (Khashm EI Girba and EI Gezira). The results also showed that field seedling emergence was positively correlated with the estimate, under laboratory
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