نتایج جستجو برای: modern crop varieties

تعداد نتایج: 290957  

2017
Anne L. Maddison Anyela Camargo‐Rodriguez Ian M. Scott Charlotte M. Jones Dafydd M. O. Elias Sarah Hawkins Alice Massey John Clifton‐Brown Niall P. McNamara Iain S. Donnison Sarah J. Purdy

In perennial energy crop breeding programmes, it can take several years before a mature yield is reached when potential new varieties can be scored. Modern plant breeding technologies have focussed on molecular markers, but for many crop species, this technology is unavailable. Therefore, prematurity predictors of harvestable yield would accelerate the release of new varieties. Metabolic biomar...

Journal: :Tropical life sciences research 2016
Gincy Paily Thottathil Kandakumar Jayasekaran Ahmad Sofiman Othman

Agricultural development in the tropics lags behind development in the temperate latitudes due to the lack of advanced technology, and various biotic and abiotic factors. To cope with the increasing demand for food and other plant-based products, improved crop varieties have to be developed. To breed improved varieties, a better understanding of crop genetics is necessary. With the advent of ne...

2003

Humans have cultivated plants for thousands of years, during which time crop plants have been continually selected for improved yield and other desirable characteristics. The improvement of a plant species by conventional techniques involves the selection for breeding purposes of certain plants that express important characteristics. As a result of human intervention in selecting which plants t...

2011
A. J. Karley T. A. Valentine G. R. Squire

Sustainable food production depends critically on the development of crop genotypes that exhibit high yield under reduced nutrient inputs. Rooting traits have been widely advocated as being able to influence optimal plant performance, while breeding-based improvements in yield of spring barley suggest that this species is a good model crop. To date, however, molecular genetics knowledge has not...

2014
Jaqueline Garcia-Yi

Policies for promoting the in situ conservation of underutilized crop varieties include the provision of economic incentives to farmers for their market commercialization. Nevertheless, market participation could also have the counter-effect of favoring the cultivation of uniform commercial crop varieties and inducing the erosion of crop genetic diversity. The objective of this research was to ...

2011
Dejene K. Mengistu

Climate change adversely affects Ethiopian economy due to heavy dependence of the agricultural sector on rainfall. A decrease of rainfall and rise in temperature has been increasing the exposure of the country to frequent drought. The study was conducted in central Tigray, Adiha tabia, to examine the perception of farmers on trends of climate changes and existing coping strategies. Farmers’ kno...

2012
Manish Roorkiwal Prakash Chand Sharma

Chickpea (Cicer arietinum L.) is an important food legume crop, particularly for the arid regions including Indian subcontinent. Considering the detrimental effect of drought, temperature and salt stress on crop yield, efforts have been initiated in the direction of developing improved varieties and designing alternate strategies to sustain chickpea production in adverse environmental condition...

A.J. G van Gastel P.C. Struik Z. Bishaw,

A total of 206 wheat and 200 barley farmers were interviewed in northeastern Syria to understand farmer perceptions and practice relating to modern varieties, seed sources and seed quality. Wheat farmers had better awareness and grew modern varieties (87%), applied fertilizers (99.5%), herbicides (93%), seed treatment (90%) or insecticides (41%). In contrast barley growers had low awareness (36...

Journal: :Critical reviews in biotechnology 2013
Nicholas Kibet Korir Jian Han Lingfei Shangguan Chen Wang Emrul Kayesh Yanyi Zhang Jinggui Fang

Plant variety and cultivar identification is one of the most important aspects in agricultural systems. The large number of varieties or landraces among crop plants has made it difficult to identify and characterize varieties solely on the basis of morphological characters because they are non stable and originate due to environmental and climatic conditions, and therefore phenotypic plasticity...

2000
C. R. Grau

Alfalfa is the primary forage crop in Wisconsin and is a key element in the state’s dairy industry. The yield of new varieties is greater than that of Vernal and other older varieties due to genetic gains made by breeders over the years. Much of the yield advantage of new varieties may be attributed to efforts to breed for resistance to a wide variety of major pathogens of alfalfa such as Verti...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید