Informatics Publishing Limited

N. K. Bhatia , M. M. Bhatt , M. A. Khan

Abstract

The 'tropical tasar', one of the variety of four commercially known non-mulberry silk in India, called Vanya silk, is an exclusive craft of about 1.5 lakh tribals, having huge base of 111.60 lakh hectare of natural tasar flora. Rearing quality, its success and profitability, then exhibiting superior grainage traits and post cocoon attributes, all indispensably rely on quality and most vitally, timely supply of required quantity of basic seed, called DFLs (Disease Free Laying) in defined brushing schedule, accommodating regional and seasonal suitability. The tribal engaged in this activity were the poorest of the poor living below the poverty line having an annual family income of Rs. 11,850.00 or less. Their seven year's success story of tasar Seribusiness clearly indicates that there has been an aggregate per farmer average annual income of Rs. 3198=00, which stands around 27% of their total annual income. Considering the economic significance of time and energy spent by them, this seasonal avocation of tasar seed crop rearing corresponds a tremendous impact in improving the economic status of tribal community to grow out of poverty and to curtail down the exploiting role of the local moneylenders. On the other hand, the cluster of seed rearers also helped the Central Silk Board grainage to increase the production of tasar seed manifold. Their contribution in terms of cocoons production was 51.47 % and for seed production it was 47.52%. It indicates that similar efforts at national level can bridge the existing demand and supply gap of 74.02 Lakh DFLs.

Keywords

Tropical Tasar, Tribal Community, Vanya Silk, Improving Livelihood, Sustainability

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Raja Ram , M. V. Samson , M. M. Bhatt

Abstract

Persea bontbycina Kost is a primary food plant of muga silkworm,Antheraea assama Ww. Phenotypic variability was studied in eight genotypes of P. bombycina for ischolar_maining percentage and other ischolar_main characters through air layering propagation. A wide range of phenotypic variability was observed for ischolar_maining percentage, number of primary ischolar_mains, number of secondary ischolar_mains. length of the longest ischolar_main. average length of the ischolar_main and survivaL The maximum ischolar_maining percentage (90.00%) and survival percentage (81.54 %) was found in genotype S 8 and minimum ischolar_maining percentage ( 50.00%) and survival percentage (32.49 % ) in genotype S 2.

Keywords

Persea Bombycina. Antheraea Assama, Air Layering, Genotypes

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R. N. Patel ¹, M. M. Bhatt ¹, G. C. Jadeja ¹, N. Sasidharan ¹

Affiliations
1 Department of Agricultural Botany and Biotechnology, B.A.College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN

Abstract

Forty-five hybrids from 10 x 10 diallel of Gossypium arboreum L. genotypes were tested with their parents at Anand in kharif, 2006 for Heterobeltiosis and Standard heterosis. The heterobeltiosis for seed cotton yield ranged from -32.48 to 154.2 per cent and the value of standard heterosis ranged from -39.05 to 41.89 per cent. The hybrid CINA-343 x Jawahar Tapti (higher economic heterosis) and hybrids CINA-333 x CINA-344 and CINA-329 x DLSA-17 (high Heterobeltiosis) were the promising hybrids identified in this study for seed cotton yield per plant. The desirable heterosis was also observed in the cross combinations viz; CINA-344 x 824 for boll weight, number of sympodia per plant and number of bolls per plant; CINA-333 x CINA 344 for number of sympodia per plant and number of bolls per plant.

Keywords

Heterosis, Seed Cotton Yield, Diploid Cotton, Diallel.

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