نتایج جستجو برای: host resistance to pests

تعداد نتایج: 10760484  

2010
Peter A. Follett

INTRODUCTION World trade in agricultural commodities continues to grow. As agricultural trade expands, it increases the risk of introducing exotic insects into new areas where they may become plant pests. The establishment of new pests can be costly due to increased crop damage, control programs, and quarantine restrictions on trade. Quarantine or phytosanitary treatments such as cold, fumigati...

2016
nichoLaS P. Storer

Introduction Resistance is a natural phenomenon, a result of evolution and adaptation to environment. When a pest population is exposed to a pest management tool, whether chemical, biological, or cultural, the individuals in that population that are genetically predisposed to overcome the management tool are more likely to survive and pass their genes on to the next generation. Over multiple ge...

2010
Hari C. Sharma

Global warming and climate change will trigger major changes in diversity and abundance of arthropods, geographical distribution of insect pests, population dynamics, insect biotypes, herbivore plant interactions, activity and abundance of natural enemies, species extinction, and efficacy of crop protection technologies. Changes in geographical range and insect abundance will increase the exten...

Journal: :نامه انجمن حشره شناسی ایران 0
m. moghaddam

the mealybug fauna of southern iran (systan & baluchestan, hormozgan, bushehr, khuzeztan and fars provinces) is unknown to many coccidologists. in this paper, 17 mealybug species from the south of iran with their host plants are reported.maconellicoccus hirsutus (green), nipaecoccus viridis (newstead) and planococcus ficus (signoret) are the important pests and ferrisia virgata (cockerell), dys...

B. Saratchandra R N Singh,

The search for alternative ways of controlling sericultural pests has led to the investigation of plant sources for naturally occurring compounds which may have Insect growth regulatory, feeding deterrency, repellency and confusantcy characteristics. More than 2000 species of the families Asteraceae, Fabaceae and Euphorbiaceae are known that possess some insecticidal activity. Plants with inse...

Journal: :Journal of Integrated Pest Management 2021

Abstract Sorghum, Sorghum bicolor L. Moench (Poaceae), is a highly valued crop cultivated worldwide, with the grain and stover being of equal importance in some developing countries. can produce high yields even under adverse environmental conditions, however, damage from insect pests at various stages plant’s development reduce its productivity, impacting low-income farmers Important sorghum i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1388

a major concern in the last few years has been the fact that the cultural centers are keeping distance with what they have been established for and instead of reproducing the hegemony, they have turned into a place for resistance and reproduction of resistance against hegemony. because the cultural centers, as urban public spaces in the last two decades, have been the subject of ideological dis...

2007
H. C. Sharma M. K. Dhillon G. Pampapathy

Sorghum is one of the most important cereal crops in the semi-arid tropics. Several insect pests damage it. The possibility of identifying genotypes with multiple resistance to these pests and transferring the relevant genes into high-yielding varieties and hybrids has been considered as an attractive approach to reducing yield losses. A set of 12 cytoplasmic male-sterile and maintainer lines, ...

2011
Sanushka Naidoo Ronishree Naidoo Caryn Oates Febe Wilken Alexander Myburg

Background Eucalyptus species, hybrids and clones are attacked by various fungal and bacterial pathogens and pests during their life-time. Global climate changes are predicted to create favourable environments for such pathogens and pests and increase incidence of host jumping from other crops, resulting in increased losses to the forestry industry [1]. The use of tolerant or resistant plant va...

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