Author: Corn India

Monsanto India Limited

About Company Monsanto is a sustainable agriculture company. We deliver agricultural products that support farmers all around the world. We are focused on empowering farmers—large and small—to produce more from their land while conserving more of our world’s natural resources such as water and energy. We do this with our leading seed brands in crops like corn, cotton, oilseeds and fruits and vegetables. We also produce leading in-the-seed trait technologies for farmers, which are aimed at protecting their yield, supporting their on-farm efficiency and reducing their on-farm costs. We strive to make our products available to farmers throughout the...

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Yaaganti Seeds Private Limited

Company Profile Yaaganti Seeds Private Limited was established in 1996 in Hyderabad, Andhra Pradesh, India, by Mr. Yaganti Venkateswarlu, a graduate in Agricultural Science and his wife Mrs Y. Aparna. Prior to launching this company the Promoters ran Hybrid seed business under the brand name of “Laxmi seeds” which the Promoters retained due to sentimental and devotional attachment. Due to the single-minded focus on developing Corn Hybrid seeds the company became the sixth largest Corn Hybrid Seed Marketer in India by 2003. The company’s brand name “Laxmi Seeds” is registered with the Trade Marks Registry, Mumbai, with effect from 2001....

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Genetic analysis of flowering period in Rabi maize (Zea Mays L.)

Abstract The estimates of gene effects for days to 50 percent flowering 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 mean days to 50 percent silking in F2s generally were later than their corresponding F1s. In case of both back crosses (BC1 and BC2) majority of them tended to regress towards their corresponding recurrent parent. Though main gene effects viz, additive and dominance and in...

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Studies on per se performance and quality characters in selected hybirds of Qpm-Genotypes

Per se performance and genetic behavior for quality 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 primary quality traits to improve QPM genotypes along with yield. F1 crosses CML-176 x CML 186 and CML-177 x CML-176 were identified as best high yielding QPM hybrids and proposed for their multi-location testing before commercial utilization. Key words: Tryptophan, lysine, maize, carbohydrates, per se profile. Maize...

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Association of top single, double and three way crosses for yield and prime yield components in maize (zea mays l.)

Forty five direct single crosses were evaluated in complete randomized block design at two locations  for their and some prime yield component 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’ method of Jenkins (1934) were predicted. For the prediction of double crosses the code numbers described by Jugenheimer( 1976)  was utilized, while for the predication of three way crosses a new code similar to code  of Jugenhaimer ( 1976) was proposed and given in...

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Association Studies of Grain Yield with its Yield Parameters Under Turcicum Leaf Blight Stress in Maize (Zea Mays,L.)

Abstract Phenotypic and genotypic correlations were calculated under artificial turicum leaf blight 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 kernels per row, number of kernel rows/ear, ear length, ear girth and 100 kernel weights both in parents and single crosses. Turicum leaf blight disease score has negatively correlated with grain yield both n parents and single crosses. The result indicated possibility of developing a high yielding...

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Genetic Variability Studies for Morphological, Qualitative and 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 per cent of mean. Eight best sweet corn lines with desirable characters were identified and will be utilized in future breeding programmes to develop sweet corn variety and hybrid. Key Words: Genetic advance, genetic variability, sweet corn. Sweet corn differs from dent corn by one recessive gene ‘su’ on 4th chromosome...

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Character Association of Grain Yield with some Yield Components in Maize (Zea Mays L.)

Abstract Correlation coefficients and path analysis were computed for grain yield with some of the yield components 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 yield attributes studied on yield and they have indicated their strong correlation with yield and their inherent capacity to influence it. The path analysis revealed that, 1000 kernel weight had the maximum direct effect on yield, where as ear length and ear girth exhibited indirect effect via 1000 kernel weight on yield,. Further, grain number per ear had influenced the grain yield mainly through ear length. Among the yield attributes studied, 1000 kernel weight seems to be the most important trait influencing the yield directly as well as indirectly. KEY WORDS: Maize, Correlation, Path analysis Yield is the most important objective in breeding of any crop, including maize. Yield is a complex character controlled by many factors including some yield components like ear length, ear girth, grain number per ear and 1000 kernel weight. Therefore selection for desirable genotypes should be made based on grain yield and also the other yield components which influence the yield; because these various yield components sometimes may be interlinked and may have plelotropic effect among traits of other economic importance. Hence the association analysis...

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Fertilizer Responsiveness and Yield 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 (DHM 105). Although the hybrid was officially released for rabi cultivation, it was tested during the rainy season under I.D. conditions with limited irrigations (about 5 Irrigations during the crop growth period as and when necessary. During kharif 1991, the highest mean grain yield (78’q/ha) was recorded under conjunctive use of NP fertilizers (120kg N+60 kg p2O5/ha) which was significantly higher than N applied alone at any of the levels (60, 120 and 180 kg N/ha yielding 57-64 q/ha). During the following kharif (1992), the grain yields, in general, were higher than those for kharif 1991 due to more favorable rainfall conditions. Mean grain yields of the order of 104 and 105 q/ha were recorded under the treatments 180 kg N + 60 kg P2O5/ha and 180 kg N+ 60 kg P2O5 +30 kg K2O/ha, respectively. These yields were significantly higher than those at any of the N levels when applied alone 960, 120, 180 kg N/ha yielding 68.5, 79.0 and 81.0 q/ha, respectively) but on par with grain yields of 96 and 95 q/ha recorded under the...

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Hybrid seed production technology of maize in Andhra Pradesh

Maize 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. In these districts, mainly yellow maize with flint grain is preferred. The crop is grown mainly for grain purposes; in urban areas it is raised round the year for green cobs and green fodder. Breeders have developed several high-yielding hybrids of maize in recent years. These have made a major contribution to...

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