نتایج جستجو برای: breeding or propagation programs and commercial orchards establishment

تعداد نتایج: 17067577  

2006
O. B. Kovanci B. Kovanci

Seasonal flight activity of Rhagoletis cerasi (L.) (Diptera: Tephritidae) adults was monitored using yellow sticky traps at sweet cherry orchards under different management regimes in Bursa, northwestern Turkey, during 1997-1998. In the reduced-risk backyard orchards, soil ploughing in the fall or spring to destroy the pupae was combined with a single application of an insecticide, while conven...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1392

to teach english adequately, qualified teachers are needed. unfortunately, there are still teachers who are teaching english without an academic degree in tefl. it is necessary for teachers to have a major in english to have subject knowledge, but it is not sufficient. teachers need to have an understanding of the social, cultural, moral, ethical, and pedagogical issues of education and practic...

2017
David N. Kuhn Ian S. E. Bally Natalie L. Dillon David Innes Amy M. Groh Jordon Rahaman Ron Ophir Yuval Cohen Amir Sherman

Mango (Mangifera indica) is an economically and nutritionally important tropical/subtropical tree fruit crop. Most of the current commercial cultivars are selections rather than the products of breeding programs. To improve the efficiency of mango breeding, molecular markers have been used to create a consensus genetic map that identifies all 20 linkage groups in seven mapping populations. Poly...

2005
Kent M. DAANE Rodrigo KRUGNER Vaughn M. WALTON

The effectiveness of augmentation programs varies depending on natural enemy species released, targeted pest, and release environment. For example, open-fields, row crops, and orchards present a more difficult environment for successful natural enemy release than protected environments, such as glasshouses. Released natural enemies may disperse from the target site, perform poorly at ambient te...

Pistacia vera ‘Badami-Riz-Zarand’ is used as rootstock in Iranian pistachio orchards due to the low sensitivity to the Phytophthora, resistance to salinity, and graft compatibility with commercial cultivars. In this study, the effects of culture media (MS and DKW) along with type and concentration of plant growth regulators were investigated on micropropagation of this rootstock. The highest gr...

2017
Mario Agurto Rudolf O. Schlechter Grace Armijo Esteban Solano Carolina Serrano Rodrigo A. Contreras Gustavo E. Zúñiga Patricio Arce-Johnson

Fungal pathogens are the cause of the most common diseases in grapevine and among them powdery mildew represents a major focus for disease management. Different strategies for introgression of resistance in grapevine are currently undertaken in breeding programs. For example, introgression of several resistance genes (R) from different sources for making it more durable and also strengthening t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده کشاورزی 1391

بررسی تنوع ژنتیکی ژنوتیپ‏های بومی پیاز ایرانی در مقایسه با انواع خارجی چکیده: برنامه های اصلاحی گیاهان بر اساس تنوع و انتخاب صفات برتر کمی و کیفی صورت می گیرد. لذا، ارزیابی تنوع ژنتیکی، اولین مرحله در برنامه های اصلاحی است. در این راستا، استفاده از روش های جدید مطالعه‏ی تنوع ژنتیکی ضروری به نظر می رسد. در این بررسی تعیین تنوع ژنتیکی سیزده ژنوتیپ پیاز ایرانی در مقایسه با دو ژنوتیپ خارجی با است...

2005
Vagner Augusto Benedito Jaap M van Tuyl Gerco C Angenent Frans A Krens

Lily species (Lilium spp.) are highly appreciated for their aesthetic value as cut flowers or pot plants and have been among the most important ornamental species worldwide for a long time. Numerous lily breeding programs aim at the establishment of novel phenotypes with higher market values. Until now these programs are based mainly on segregation and selection of natural variants and interspe...

Journal: :Journal of economic entomology 2012
J A Verdugo T Méndez S A Ortiz-Martínez R Cumsille C C Ramírez

ABSTRACT Peaches and nectarines are frequently attacked by the green peach aphid Myzus persicae (Sulzer), with significant negative impacts on fruit production. The genetic variability of resistance to this aphid among commercial cultivars of Prunus persica (L.) Batsch and Prunus persica variety nectarina was evaluated in this study. In total, 16 cultivars of P. persica were selected to evaluat...

Journal: :Horticulturae 2022

Seed is a fundamental tool to carry out breeding processes and for the propagation of crops; however, seed generally has low irregular germination. Passion fruit (Passiflora) species are economically important Ecuador, which main exporter passion concentrate in Latin America. Ecuadorian farmers propagate new plants by seeds establish orchards or extend their cultivated area. The objective this ...

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