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Evaluation of Flea Beetle (Phyllotreta Spp.) Resistance in Spring and Winter-type Canola (Brassica Napus).

2017
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Release : 2017
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Book Synopsis Evaluation of Flea Beetle (Phyllotreta Spp.) Resistance in Spring and Winter-type Canola (Brassica Napus). by : Julian Heath

Download or read book Evaluation of Flea Beetle (Phyllotreta Spp.) Resistance in Spring and Winter-type Canola (Brassica Napus). written by Julian Heath. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is an investigation into the understanding of flea beetle (Phyllotreta spp.) resistance in spring-type and winter-type canola quality Brassica napus L.. Canola is one of the world's most widely grown oilseed crops and an economically important crop in Western Canada. Genetic resistance to this common pest would add to the available tactics for integrated pest management of flea beetles in canola. The purpose of this research was to better understand the interactions of the flea beetle with canola at key feeding times in the life cycle of the flea beetle and identify genetic components related to flea beetle herbivory on canola seedlings. The objectives were to: 1) investigate seasonal effects of flea beetle herbivory on both spring-type and winter-type canola; and 2) identify quantitative trait loci (QTL) for flea beetle herbivory in two winter-type doubled haploid (DH) populations using simple sequence repeat (SSR) markers and single nucleotide polymorphic (SNP) markers. Year and seasonal effects were noted but overall trends amongst entries were similar concluding that flea beetle feeding patterns did not change throughout its life cycle. Spring-type and winter-type germplasm reacted similarly under flea beetle feeding. As such, there does not appear to be any novel resistance mechanisms that evolved as a result of divergent growth habit types in canola. Seven QTL were identified over the iii two DH populations studied. Linkage group (LG) N13 had multiple QTL identified. The remaining QTL were located on LG N04, N06, N15 and N17. It is unknown as to what mechanisms these QTL are associated with. The results of this thesis provide insight into flea beetle-canola plant interactions and identify some genetic areas of interest related to flea beetle herbivory in canola.

Integrated Management of Insect Pests on Canola and Other Brassica Oilseed Crops

2017-04-26 Technology & Engineering
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Release : 2017-04-26
Genre : Technology & Engineering
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Book Rating : 200/5 ( reviews)

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Book Synopsis Integrated Management of Insect Pests on Canola and Other Brassica Oilseed Crops by : Gadi V P Reddy

Download or read book Integrated Management of Insect Pests on Canola and Other Brassica Oilseed Crops written by Gadi V P Reddy. This book was released on 2017-04-26. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively reviews current pest management practices and explores novel integrated pest management strategies in Brassica oilseed crops. It is essential reading for pest management practitioners and researchers working on pest management in canola and other Brassica crops worldwide. Canola, mustard, camelina and crambe are the most important oilseed crops in the world. Canola is the second largest oilseed crop in the world providing 13% of the world's supply. Seeds of these species commonly contain 40% or more oil and produce meals with 35 to 40% protein. However, its production has declined significantly in recent years due to insect pest problems. The canola pest complexes are responsible for high insecticide applications on canola. Many growers rely on calendar-based spraying schedules for insecticide applications. The diamondback moth Plutella xylostella and flea beetles Phyllotreta spp. (P. cruciferae and P. striolata)cause serious damage to canola. In the Northern Great Plains, USA, for instance, P. xylostella is now recorded everywhere that canola is grown. Severe damage to canola plants can be caused by overwintering populations of flea beetles feeding on newly emerged seedlings. Cabbage seed pod weevil (Ceutorhynchus obstrictus), swede midge (Contarinia nasturtii), and tarnished plant bug (Lygus lineolaris) are also severe pests on canola. Minor pests include aphids (cabbage aphid, Brevicoryne brassicae and turnip aphid, Hyadaphis erysimi) and grasshopper, Melanoplus sanguinipes.

Bibliography of Agriculture

1999 Agriculture
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Release : 1999
Genre : Agriculture
Kind : eBook
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Book Synopsis Bibliography of Agriculture by :

Download or read book Bibliography of Agriculture written by . This book was released on 1999. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliography of Agriculture with Subject Index

1987-10 Agriculture
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Release : 1987-10
Genre : Agriculture
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Book Synopsis Bibliography of Agriculture with Subject Index by :

Download or read book Bibliography of Agriculture with Subject Index written by . This book was released on 1987-10. Available in PDF, EPUB and Kindle. Book excerpt:

Biocontrol-Based Integrated Management of Oilseed Rape Pests

2010-06-16 Technology & Engineering
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Release : 2010-06-16
Genre : Technology & Engineering
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Book Rating : 83X/5 ( reviews)

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Book Synopsis Biocontrol-Based Integrated Management of Oilseed Rape Pests by : Ingrid H. Williams

Download or read book Biocontrol-Based Integrated Management of Oilseed Rape Pests written by Ingrid H. Williams. This book was released on 2010-06-16. Available in PDF, EPUB and Kindle. Book excerpt: Oilseed rape is a major arable crop in both Europe and North America. It is attacked by unique complexes of insect pests still largely controlled through the application of chemical insecticides. Crop management systems for the future must combine sustainability with environmental acceptability to satisfy both social and economic demands. This book, in its 17 chapters each led by a world expert, reviews research progress towards developing integrated pest management systems for the crop that enhance conservation biocontrol. This approach is particularly timely because of the development in Europe of insecticide resistance in the pollen beetle, a major pest of the crop. The past decade has seen considerable progress in our knowledge of the parasitoids and predators that contribute to biocontrol, of their distribution patterns, and their behavioural ecology, both within and without the crop. There is potential for natural enemy conservation through modification of within-field crop husbandry practices, as well as, on the landscape scale, through habitat manipulation to encourage vegetational diversity. This book will prove invaluable as a text for researchers, university teachers, graduate scientists, extension workers and growers involved in integrated pest management.

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