نتایج جستجو برای: reproductive stage duration

تعداد نتایج: 636967  

Journal: :پژوهش های تولید گیاهی 0
جهانفر دانشیان دانشیار موسسه تحقیقات کرج حمید جباری دانشگاه داوران

in order to study of some effective phenologic and physiologic characteristics on 18 sunflower hybrids yield under optimum conditions, an experiment was conducted as randomized complete block design with three replications at the research field of seed and plant improvement institute-karaj in 2006-2007. the result indicated that the hybrids showed significant difference in phonologic characteri...

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Journal: International Journal of Fertility and Sterility 2013
Akhoond MR Amirchaghmaghi E, Kashfi F Malekzadeh F Moini A Saei M1, Mirbolok MH

Background: Endometriosis as one of the most common health problems of women during their reproductive age, affects 2.5-3.3% of women. Endometriosis may be asymptomatic or associated with dysmenorrheal symptoms, dyspareunia, pelvic pain, abnormal uterine bleeding and infertility. The objective of present study was to determine the risk factors related to endometriosis among Iranian infertile wo...

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Journal: :Fertility and sterility 2012
Siobán D Harlow Margery Gass Janet E Hall Roger Lobo Pauline Maki Robert W Rebar Sherry Sherman Patrick M Sluss Tobie J de Villiers

OBJECTIVE The aim of this article is to summarize the recommended updates to the 2001 Stages of Reproductive Aging Workshop (STRAW) criteria. The 2011 STRAW + 10 reviewed advances in understanding of the critical changes in hypothalamic-pituitary-ovarian function that occur before and after the final menstrual period. METHODS Scientists from five countries and multiple disciplines evaluated d...

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2015
P. V. V. Prasad Maduraimuthu Djanaguiraman Ramasamy Perumal Ignacio A. Ciampitti

Sorghum [Sorghum bicolor (L.) Moench] yield formation is severely affected by high temperature stress during reproductive stages. This study pursues to (i) identify the growth stage(s) most sensitive to high temperature stress during reproductive development, (ii) determine threshold temperature and duration of high temperature stress that decreases floret fertility and individual grain weight,...

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Journal: :علوم گیاهان زراعی ایران 0
نسرین زیلوئی دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران علی احمدی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی جودی استادیار، دانشکدۀ کشاورزی مغان، دانشگاه محقق اردبیلی محسن باقری ده آبادی دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران هاله محمد مراد طارم دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the time of duration of plant developmental stages could have an effect on crop yield and adaptation in a specific environment. the aim of this study was to evaluate the phenological behavior in a wide range of wheat cultivars and their relation with adaptation and potential of crop production in a specific climate (semi-arid and cold). by using a simple lattice design with three replications i...

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Journal: :Integrative and comparative biology 2012
Eric A Treml Jason J Roberts Yi Chao Patrick N Halpin Hugh P Possingham Cynthia Riginos

Connectivity among marine populations is critical for persistence of metapopulations, coping with climate change, and determining the geographic distribution of species. The influence of pelagic larval duration (PLD) on connectivity has been studied extensively, but relatively little is known about the influence of other biological parameters, such as the survival and behavior of larvae, and th...

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Journal: :علوم باغبانی ایران 0
مرتضی پوزش شیرازی عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان بوشهر مختار زلفی باوریانی عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان بوشهر محمد مدرسی استادیار گروه اصلاح نباتات دانشکدة کشاورزی و منابع طبیعی دانشگاه خلیج فارس بهرام بهزادی کارشناس ارشد بخش تحقیقات اصلاح و تهیة نهال و بذر مرکز تحقیقات کشاورزی و منابع طبیعی استان بوشهر

such aabiotic stresses like water stress are some of the most important threats to the production of agricultural crops. it is almost very rare to find a place with no stress where plants can reach their potential yield. a water stress of 17 percent decrease yield, due to its effect upon fruit setting is notable. therefore, a study was conducted in bushehr agricultural research center (located ...

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ژورنال: فصلنامه علمی پژوهشی گیاهان دارویی 2020
Ghorbanpour, Mansour , Hadian, Javad , Paryan, Simin ,

Background: Cerium oxide nanoparticles (CeO2NPs) may differentially affect physiological and metabolic processes of plants depends on plant species, culture conditions, concentrations and application methods. Objective: Evalaution of the effects of different concentrations of CeO2NPs through two different methods at two growth stages on morpho-physiological and phytochemicqal characteristics of...

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2016
Xine Li Lili Jiang Fandong Meng Shiping Wang Haishan Niu Amy M. Iler Jichuan Duan Zhenhua Zhang Caiyun Luo Shujuan Cui Lirong Zhang Yaoming Li Qi Wang Yang Zhou Xiaoying Bao Tsechoe Dorji Yingnian Li Josep Peñuelas Mingyuan Du Xinquan Zhao Liang Zhao Guojie Wang

Organisms' life cycles consist of hierarchical stages, from a single phenological stage (for example, flowering within a season), to vegetative and reproductive phases, to the total lifespan of the individual. Yet phenological events are typically studied in isolation, limiting our understanding of life history responses to climate change. Here, we reciprocally transfer plant communities along ...

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Journal: :بوم شناسی کشاورزی 0
بی بی الهه موسوی فر محمدعلی بهدانی مجید جامی الاحمدی محمد سعید حسینی بجد

deficit of oil seeds and high volume of oil imports in iran, and limitation of water sources against production of many oil seed crops, demonstrate the importance of detection tolerant species and cultivars for stressful conditions and their most sensitive growth stages to saline stress. in order to study response of spring safflowers (carthamus tinctorius l.) genotypes to disruption irrigation...

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  • " +i+ "
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