نتایج جستجو برای: wheat cultivars

تعداد نتایج: 80286  

2011
Mikhail A. Semenov Peter R. Shewry

New crop cultivars will be required for a changing climate characterised by increased summer drought and heat stress in Europe. However, the uncertainty in climate predictions poses a challenge to crop scientists and breeders who have limited time and resources and must select the most appropriate traits for improvement. Modelling is a powerful tool to quantify future threats to crops and hence...

2015
YAO Xia

A knowledge model with temporal and spatial characteristics for the quantitative design of a cultural pattern in wheat production, using systems analysis and dynamic modeling techniques, was developed for wheat management, as a decision-making tool in digital farming. The fundamental relationships and algorithms of wheat growth indices and management criteria to cultivars, ecological environmen...

2012
HAMID RASHID MOHAMMAD HAROON KHAN ZUBEDA CHAUDHRY RAISA BANO NAVEED IQBAL RAJA Mohammad Ali Jinnah

Wheat is the world’s largest volume crop traded internationally. Foliar diseases are the main biotic restriction reducing yield in wheat crops. Wheat productivity can be enhanced through controlling foliar disease through the use of resistant cultivars. Plant breeders are providing considerable attention to wheat genetic improvement from the past few years to minimize losses due to pests and pa...

2009
ZINEB DIANI CHERKAOUI EL MODAFAR

The inoculation of soft wheat by Septoria tritici induces a foliar necrosis and an important modifications in the oxidative metabolism of which the time course clearly distinguishes the studied cultivars according to their behaviour to this disease. In the resistant cultivars (Mahdia, Achtar), the inoculation was accompanied by an early and localized necrosis and a fast and intense increase of ...

Journal: :پژوهش های زراعی ایران 0
سیدهاشم موسوی سید عطااله سیادت خلیل عالمی سعید اسکندر زند عبدالمهدی بخشنده

introduction integrated weed management is based on combination of several management methods, while reducing the rate of the use of herbicides, will result in efficient management and sustainable weed control. ability of crop tolerance and prevent weed growth are two important traits in weed competition. an appropriate and suitable cultivar, has high yield potential in the presence of weed and...

2017
Ranjeet R. Kumar Suneha Goswami Mohammed Shamim Upama Mishra Monika Jain Khushboo Singh Jyoti P. Singh Kavita Dubey Shweta Singh Gyanendra K. Rai Gyanendra P. Singh Himanshu Pathak Viswanathan Chinnusamy Shelly Praveen

Wheat is highly prone to terminal heat stress (HS) under late-sown conditions. Delayed- sowing is one of the preferred methods to screen the genotypes for thermotolerance under open field conditions. We investigated the effect of terminal HS on the thermotolerance of four popular genotypes of wheat i.e. WR544, HD2967, HD2932, and HD2285 under field condition. We observed significant variations ...

2012
Olin D. Anderson Lingli Dong Naxin Huo Yong Q. Gu

The utility of mining DNA sequence data to understand the structure and expression of cereal prolamin genes is demonstrated by the identification of a new class of wheat prolamins. This previously unrecognized wheat prolamin class, given the name δ-gliadins, is the most direct ortholog of barley γ3-hordeins. Phylogenetic analysis shows that the orthologous δ-gliadins and γ3-hordeins form a dist...

The ability of plants to grow and produce high yields in soils with low zinc (Zn) availability is different among wheat cultivars. However, the physiological mechanism behind Zn efficiency is not currently fully understood and the putative role of Zn transporter proteins in contributing to Zn efficiency has not yet been determined. Therefore, the aim of this study was to compare the expression ...

Journal: :علوم گیاهان زراعی ایران 0
حسین نوری دانشجوی سابق پردیس کشاورزی و منابع طبیعی کرج علی احمدی کاظم پوستینی پردیس کشاورزی و منابع طبیعی کرج

studies manipulating the source-sink relationships during post anthesis in wheat have shown inconsistent results, concluding that wheat yield could be either sinkor source-limited. the aim of this study was to determine source limitation degree of 36 iranian wheat cultivars andto investigate their intrinsic compensatory mechanism in response to source size reduction. a split plot design based o...

Journal: :Genetics and molecular research : GMR 2011
O Karakas F Gurel A A Uncuoglu

Resistance gene analog-expressed sequence tag (RGA-EST)-based markers have been used for variety discrimination and studies of genetic diversity in wheat. Our aim is to increase the competitiveness of public wheat breeding programs through intensive use of modern selection technologies, mainly marker-assisted selection. The genetic diversity of 77 wheat nucleotide binding site (NBS)-containing ...

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