Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Inde → 2002 → Evaluation and utilization of some elite mulberry genotypes morus SPP through chemo and bioassay studies with silkworm bombyx mori L under semi arid conditions

Sri Krishnadevaraya University (2002)

Evaluation and utilization of some elite mulberry genotypes morus SPP through chemo and bioassay studies with silkworm bombyx mori L under semi arid conditions

Kumar, P. Sujay

Titre : Evaluation and utilization of some elite mulberry genotypes morus SPP through chemo and bioassay studies with silkworm bombyx mori L under semi arid conditions

Auteur : Kumar, P. Sujay

Université de soutenance : Sri Krishnadevaraya University

Grade : Doctor of Philosophy (PhD) 2002

Préface partielle
Silk, the finest thread produced by the silkworm Bombyx mori L. is the only natural fibre being highly exploited by the humankind. To a lay man it’s a wonder how such a tiny worm produces a long fine thread. Sericulture is one of the important agricultural activities, supporting the rural people and earning good foreign exchange, adding good amount to Indian trade. Sericulture is now in practice throughout India. However, the industry in major hails from the South India only. Sericulture is unique in its vast employment and income generating potentialities. From a mere traditional practice, it has now shaped into a viable agro-industry. Being the sole food plant for the silkworm Bombyx mori L., mulberry caught the attention of the researchers easily. Mulberry cultivation is the most important part of sericulture and the economics of this agro-based cottage enterprise mainly depends on the total leaf produced in a unit area over a unit time. Crop yields can be increased mainly by cultivating high yielding strains, providing better agronomic inputs and protecting the crop from pests and diseases. Of the three yield contributing factors, usage of high yielding varieties is the cheapest and effective method and mulberry is not an exception to this. In India, South India in particular, Local and Kanva-2 (M-5) are the popular mulberry varieties. Andhra Pradesh is the second largest producer of raw silk, next to Karnataka. Anantapur stands first in raw silk production with a vast mulberry acreage, among the sericulture practicing districts of Andhra Pradesh. Sericulture is the chief agricultural crop of Anantapur, along with groundnut. Though the district is encroached by drought conditions, Anantapur is still producing highest raw silk from the state. Delayed monsoons, high temperatures, dry humid conditions are the limiting factors for the agriculture activities in this zone. For the past few years, the agriculture industry has been facing drastic conditions and sericulture is not an exception of that. However, sericulture is practiced only under irrigated conditions in Andhra Pradesh. The semi-arid conditions ofthis zone are not supportive for the traditional mulberry genotypes for qualitative and quantitative produce. At this juncture, a mulberry genotype with good yield and quality is the ultimate necessity to the farmers of sericulture to sustain the sericulture industry in the district. The present investigation has been carried out to screen out the superior mulberry genotype that can produce good quality and quantity ofleaf.

Mots clés : Mulberry Genotypes Bioassay Silkworm Bombyx

Présentation et version intégrale (Shodhganga)

Page publiée le 20 décembre 2015, mise à jour le 31 janvier 2021