Author: Publisher:
ISBN:
Category : Heliothis zea
Languages : en
Pages : 14
Book Description
Artificial Diets for Mass Rearing the Corn Earworm (heliothis Zea)
Author: Artificial Diets for Mass Rearing the Corn Earworm (Heliothis Zea)
Author: Artificial Diets for Mass Rearing Corn Earworm (Heliothis Zea)
Author: Artifical Diets for Mass Rearing the Corn Earworm (Heliothis Zea)
Author: Corn earworm rearing mechanization
Author: Alton N. SparksPublisher:
ISBN:
Category : Corn earworm
Languages : en
Pages : 16
Book Description
Techniques for Efficient Mass Rearing and Infestation in Screening for Host Plant Resistance to Corn Earworm, Heliothis Zea
Author: John A. MihmPublisher:
ISBN:
Category : Corn
Languages : en
Pages : 28
Book Description
The practice of growing varieties, lines or hybrids resistant to attack by insects, and their subsequenty effectiveness in reducing pest populations and corresponding crop losses, is well documented for several agricultural crops and pest species. The development of many of these resitant cultivars has resulted from or been facilitated by many years of study of the insect pests, the development of techniques to mass rear the insects, artificially infest the crop species, and screen the germplasm of the species (or their wild relatives) for resistance, and the successful application of appropriate breending procedures for improvement of the resistance characteristic over succeeding cycles or generations of population improvement (Guthrie, 1974, 1980). The basic components necessary to identify or developed germaplasm with resitance, or with higher levels of resistance than present cultivars utilized by farmer/producers, include: (1) A colony of the insect species, which exhibits the vigor and vitality of the damaging pest population within the geographical area that is affected. (2) The capability to efficiently mass culture the species, including the rearing facility, trained personnel, natural, meridic, or defined diets, and rearing procedures and containers. (3) Germaplasm resources that area representative of the genetic variation within the crop and/or its closely related species. (4) Methods for uniform artificial infestation. (5) Methods for assessing resultant damage, or lack of damage, to the plants subjected to deliberate infestation (rating scales to determine classes or categories of resistance or susceptibility). (6) Screening to determine whether adequate levels of resistance exist within suitable agronomic types (equivalent or better than currently grown cultivars), and effective selection/breeding scheme established to improve either the resistance levels or agronomic characteristics of the "improved" materials.
Mass Rearing the Corn Earworm in the Laboratory
Author: Rodney Lane BurtonPublisher:
ISBN:
Category : Heliothus armigera
Languages : en
Pages : 8
Book Description
Mass Rearing Corn Earworm in Laboratory [with List of Literature Cited
Author: Moisture Removed from Rearing Cells During Incubation of Corn Earworm on an Artificial Diet
Author: W. W. HareAttempted Eradication of the Corn Earworm from St. Croix, U. S. Virgin Islands (Classic Reprint)
Author: J. Wendell SnowPublisher: Forgotten Books
ISBN: 9780366790340
Category : Business & Economics
Languages : en
Pages : 20
Book Description
Excerpt from Attempted Eradication of the Corn Earworm From St. Croix, U. S. Virgin Islands In 1969 these problems were minimized, ex cept for periodic slumps in the rearing and release programs. The high ratios of sterile to natural males caused the elimination of oviposi tion rather than the production of sterile eggs. The overall effect was a cycling of the natural population of St. Croix with the Tifton, Ga., rearing program. The high degree of locking between the released population and the native females probably accounts for the lack of sterile-egg production and the near success of the 1969 program. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.