نتایج جستجو برای: days after pollination

تعداد نتایج: 1846585  

2013
Umashankar Chandrasekaran Aizhong Liu

A detailed knowledge of storage reserve accumulation in developing seeds can provide vital information to create strategies for improving the lipid content as well as the natural value of castor (Ricinus communis L.) crop. After hand pollination (female flowers-tagged), seed filling (lipid and protein accumulation) in castor bean is initiated as early as 7 days after pollination (DAP). Accumula...

Journal: :Tropical life sciences research 2009
Sasithorn Pangsuban Noparat Bamroongrugsa Kamnoon Kanchanapoom Charassri Nualsri

Various aspects of the reproductive success of Garcinia atroviridis Griff. were studied. Controlled pollination experiments were carried out in an orchard located in Songkhla province, southern Thailand, from February to July 2003. Floral longevity, stigma receptivity, and pollen viability were examined before carrying out the experiments. Three pollination treatments were compared: open pollin...

Journal: :Revista de biologia tropical 2012
Xiu-Rong Wang Gui-Jie Ding

Jatropha curcas belongs to family of Euphorbiaceae, and is an important biological tree species for diesel production. The current descriptions of the phenotypic traits for male and female flowers are not comprehensive and there have been no reports about the process of J. curcas from pollen germination on stigma to pollen tubes conducting fertilization after entering the ovary and ovule. To as...

2014
Marina Wolowski Tia-Lynn Ashman Leandro Freitas

Despite the extensive knowledge of pollen limitation in angiosperms, its assessment within tropical forests is still limited. Especially lacking are large scale comparisons of species within this biome - one that is highly diverse but also becoming increasingly threatened. In fact, many tropical plant species depend upon pollinators for reproduction but evaluation of the impact of this dependen...

2017
Jean-Pierre Renaudin Cynthia Deluche Catherine Cheniclet Christian Chevalier Nathalie Frangne

In angiosperms, the ovary wall resumes growth after pollination through a balanced combination of cell division and cell expansion. The quantitative pattern of these events remains poorly known in fleshy fruits such as tomato (Solanum spp.), in which dramatic growth of the pericarp occurs together with endoreduplication. Here, this pattern is reported at the level of each of the cell layers or ...

2006
Jun HANAWA

The gametogenesis and the embryogeny of Sesamum indicum L. were reported by Nohara (1934). He observed the embryo sac formation but did not completed the study up to the stage of the embryo. However,. Johansen (1950) states that the embryogeny of the Pedaliaceae probably follows the Onagrad type, judging from the inadequate illustrations accompanied by the rather meager accounts of the embryoge...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - پژوهشکده زبان و گویش 1393

abstract the purpose of this study is twofold: on the one hand, it is intended to see what kind of noticing-the –gap activity (teacher generated vs. learner generated) is more efficient in teaching l2 grammar in classroom language learning. on the other hand, it is an attempt to determine which approach of the noticing-the-gap- activity is more effective in the long- term retention of grammar...

Phalaenopsis is an important genus of orchids that is grown for economical production of cut flower and potted plants. The objective of this study is the evaluation of correlation between morphological and physiological traits of self and cross-pollination of 5 varieties of Phalaenopsis orchid. Some morphological traits were measured: Capsule length (CL), capsule volume (CV), weight of seeds in...

2002
Theresa M. Culley Stephen G. Weller Ann K. Sakai

Theresa M. Culley* Stephen G. Weller Ann K. Sakai Dept of Ecology and Evolutionary Biology, University of California–Irvine, Irvine, CA 92697, USA. *e-mail: [email protected] Although much emphasis has been placed on specialist pollination systems, attention is shifting towards systems in which plants are visited by a variety of pollinators [1,2]. Until recently, examples of generalist pollinatio...

Journal: :علوم باغبانی ایران 0
مصطفی عالی فر دانشجوی سابق کارشناسی ارشد، استاد و دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران علی عبادی دانشجوی سابق کارشناسی ارشد، استاد و دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا فتاحی مقدم دانشجوی سابق کارشناسی ارشد، استاد و دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

seedless grapes are widely grown all over the world. embryo rescue technique proved to be able to overcome the problem of embryo abortion in seedless grape breeding program. since, the efficiency of this technique is not desirable, so a lot of efforts have been done in different directions in order to improve this technique. this study was conducted in two separate experiments in which chlormeq...

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