Maize (Zea Mays L.) is most widely distributed crop and ranks third in world crop production while I India. It is regarded as an important food grain, feed and fodder crop. More than sixty species of insects have been reported to attack maize crop during its different stages of growth. (Anon. 1998. Among the different…
Abstract The estimates of gene effects for days to 50 percent flowering period in rabi maize were obtained in six parameters model of generation means (Mather and Jinks 1971) involving ten diverse inbred lines. From the study of gene effects of F1 generation early flowering was found to be partially dominant over late flowering. The…
Per se performance and genetic behavior for Quality Characters in Qpm-Genotypes traits viz, 100-kernel weight, protein per cent, tryptophan and lysine in protein, specific gravity and grain yield were studied in seven selected QPM hybrids in two locations during kharif 2000. Specific gravity, tryptophan and lysine content in protein and protein per cent found as…
Forty-five direct single crosses were evaluated in complete randomized block design at two locations for their and some prime yield components in maize viz., 100kernel weight, ear length, ear girth, number of rows per ear and number of seeds per row. Yields of possible 630 double crosses and 360 three-way crosses as per the ‘B’…
Abstract Phenotypic and genotypic correlations were calculated under artificial turicum leaf blight stress in maize inoculated conditions to assess the degree of relationship of yield components with grain yield in maize. Genotypic correlation coefficiants possessed higher values for all the yield parameters than phenotypic ‘r’ values. Yield was positively and significantly correlated with number of…
Qualitative & Quantitative Parameters in Sweet Corn ABSTRACT The characters 100-grains weight, number of seeds per row, grain yield per plot and sugar content were the most important parameters to be considered in parents for effective selection before initiating actual crossing programme since these attributes exhibited high variability, heritability combined with high genetic advance as…
Abstract Correlation coefficients and path analysis were computed for grain yield with some of the yield components in maize namely ear length, ear girth, grain number per ear and 1000 kernal weight in 10 parents and their all possible 45 direct crosses. The correlation coefficient values were highly significant for the maize yield attributes studied…
Potential of Hybrid Maize Field experiments were conducted on sandy loam soils (Alf sols of low to medium soil fertility status) at Rajendranagar campus, Hyderabad during two successive kharif seasons of 1991 and 1992 at the same site leaving the land fallow between the seasons to assess fertilizer responsiveness and yield potential of hybrid maize…
Hybrid seed production technology of maize in Andhra Pradesh has great potentialities in contributing to total food production in India. It is cultivated in about 0.3 million ha in Andhra Pradesh especially in the districts of Karimnagar, Warangal, Nizamabad, Adilabad, Medak and Ranga Reddy. Hybrid seeds are produced in Nizamabad, Guntur and West Godavari districts….
Grain yield losses in maize due to Late Wilt and Turcicum Leaf Blight in Maize (up to 100%0 (Jain and Kothari, 1983), (29-91%) (UIIstrup, 1952) have been reported. Both these diseases are considered as the major diseases on maize crop in peninsular India including Andhra Pradesh (Anon, 1988). Hence and effort was made in the…
Grain and Straw yields in Maize Composites Abstract Eight promising genotypes were studied for three seasons (1989-1991) at the Agricultural Research Station, Amberpet to evaluate their stability for grain and straw yields under kharif conditions. There was a significant variation for genotypes and genotype x environment interaction for grain as well as for straw yields….
Maize is mainly grown in Karimnagar, Warangal, Medak, Nizamabad, Adilabad and Randgareddy districts of Andhra Pradesh. This area forms the maize belt of this state. About 2.5 lakh hectares of maize is grown under rain-fed situation in kharif season while around 0.6 lakh hectare is grown during Rabi under irrigated conditions. There is an immense…