نتایج جستجو برای: kernels per spike

تعداد نتایج: 474343  

Journal: :علوم گیاهان زراعی ایران 0
حمید محمدی دانشجوی سابق دکتری پردیس کشاورزی و منابع طبیعی دانشگاه تهران علی احمدی دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران فواد مرادی استادیار پژوهشکده بیوتکنولوژی کشاورزی کرج علیرضا عباسی استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران کاظم پوستینی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی جودی استادیار دانشگاه محقق اردبیلی- دانشکده کشاورزی مغان فواد فاتحی

drought stress is one of the most important abiotic stresses which can affect the growth of a plant, thereby curbing crop yield. identification of effective morphological traits is the main aim of each breeding program. our objective was to identify agronomic traits associated with changes in grain yield of wheat under irrigated and drought conditions. to address this objective, grain yield and...

Journal: :تولید گیاهان زراعی 0
سعید نواب پور استادیار گروه اصلاح نباتات و بیوتکنولوژی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان گزل کاظمی دانش آموخته کارشناسی ارشد گروه اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

in order to determine the best traits related to indirect increasing of grain yield, five wheat genotypes (zagros, tajan, durum cul., kohdasht and n-81-18 line) were evaluated by using randomized complete block design (rcbd) with 4 replications in research field of gorgan university of agricultural sciences and natural recourses. the studied traits included leaf area index (lai), crop growth ra...

Journal: :Bio Systems 1998
R Van Rullen J Gautrais A Delorme S Thorpe

The speed with which neurones in the monkey temporal lobe can respond selectively to the presence of a face implies that processing may be possible using only one spike per neurone, a finding that is problematic for conventional rate coding models that need at least two spikes to estimate interspike interval. One way of avoiding this problem uses the fact that integrate-and-fire neurones will t...

2011
Zvi Peleg Tzion Fahima Abraham B. Korol Shahal Abbo Yehoshua Saranga

Wheat is undoubtedly one of the world's major food sources since the dawn of Near Eastern agriculture and up to the present day. Morphological, physiological, and genetic modifications involved in domestication and subsequent evolution under domestication were investigated in a tetraploid recombinant inbred line population, derived from a cross between durum wheat and its immediate progenitor w...

Abdollah Mohamadi Manoochehr Khodarahmi Sayed Ali Peyghambari Sayed Mahmoud Nazeri Yaser Zanganeh Asadabadi

Abstract In order to study the inheritance of grain yield and its components in bread wheat, two cultivars, Karchyya(drought and salinity tolerant) and Gaspard (sensitive to drought and salinity stress) were crossed.Parents together with F1, F2, F3, BC1and BC2 generations were evaluated using a randomized complete block design with three replications in 2008-2009 growing season.Grain weight per...

Among the crops, cereals have been special important and triticale is the most successful man made cereal. In present research, water deficit stress effects on 19 triticale genotypes (X Triticosecale wittmack) and two wheat cultivars (Triticum aestivum), Shiraz (sensitive to water deficit stress) and Kavir (tolerant to water deficit stress) were tested. Therefore, two separate field experiments...

ژورنال: علوم آب و خاک 2008
بائوم, مایکل , محمدی, محتشم ,

Improving the drought tolerance of barley varieties through the integrated efforts of plant biotechnology and conventional breeding is an important objective in barley breeding. One hundred and fifty eight doubled haploid lines of barley were mapped with 50 SSR and 93 AFLP markers. Agronomic traits such as early growth vigor, plant height, peduncle length, extrude of spike from flag leaf, spike...

Manure not only supplies many nutrients for crop production, but it is also a valuable source for increasing soil organic matter content and improving soil structure. To increase organic manure content as well as improve the wheat production adding plant residues and livestock to soil is necessary. The experiment was conducted in Shavoor Research Station to determine seed yield and soil physica...

بی‌همتا, محمدرضا, خدارحمی, منوچهر, رحیمی چگنی, اعظم,

In order to evaluate and grouping wheat genotypes based on grain yield and important agronomic traits under drought stress, a field experiment was conducted with 43 wheat genotypes using a Randomized Complete Block design in three replication at Azad University, khorramabad, Iran in 2012-2013 cropping season. Evaluated traits were: day to maturity, day to pollination, grain filling rate, grain ...

2011
Sander M. Bohte

We develop a learning rule for networks of spiking neurons where signals are encoded using fractionally predictive spike-coding. In this paradigm, neural output signals are encoded as a sum of shifted power-law kernels. Simple greedy thresholding can compute this encoding, and spike-trains are then exactly the signal’s fractional derivative. Fractionally predictive spike-coding exploits natural...

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