نتایج جستجو برای: assisted selection in rice germination traits breeding methods

تعداد نتایج: 17220727  

نوری, منصور , امیری خواه, رحیم , باقری, لیلا, مظفری, کامران ,

Mutation breeding as an alternative to conventional breeding, is commonly used to improve current varieties and to generate new varieties. Genetic variation in rice is very low, because of its self-pollination. This study, carried out to determine the GR50 dosage for an irradiation mutagenesis study on the rice and to determine the effects of gamma irradiation on germination and growth rate of ...

Breeding of rice for drought tolerance requires proper evaluation and analysis of genetic diversity in breeding populations related to drought tolerance. In order to identify indices for tolerant and sensitive rice genotypes to drought stress, an experiment with 59 genotypes of rice was conducted based of a complete block design with three replications in non-stressed (flooding) and stressed co...

2012
Fátima Bosetti Camila Montebelli Ana Dionísia L.C. Novembre Helena Pescarin Chamma José Baldin Pinheiro

Low temperatures at the initial stages of rice development prevent fast germination and seedling establishment and may cause significant productivity losses. In order to develop rice cultivars exhibiting cold tolerance, it is necessary to investigate genetic resources, providing basic knowledge to allow the introduction of genes involved in low temperature germination ability from accessions in...

2012
Junfei Gu Xinyou Yin Paul C. Struik Tjeerd Jan Stomph Huaqi Wang

Photosynthesis is fundamental to biomass production, but sensitive to drought. To understand the genetics of leaf photosynthesis, especially under drought, upland rice cv. Haogelao, lowland rice cv. Shennong265, and 94 of their introgression lines (ILs) were studied at flowering and grain filling under drought and well-watered field conditions. Gas exchange and chlorophyll fluorescence measurem...

M. Hosseinpour Mashhadi, M. Mahmoudi M. Rastin M.R. Nassiri N. Tabasi N.E.J. Kashan R. Vaez Torshizi S.E. Nooraee

Quantitative traits locus for milk production traits has been described on centromeric end of bovine chromosome 14. Reports name the acyl coA: diacylglycerol acyltransferase (DGAT1) gene as a potential candidate gene with dinucleotide substitution (AA to GC) in exon VIII which causes the change of lysine to alanine in amino acid (K232A).The aim of the present study was to estimate the frequency...

F. Rafeie M. Noorisadegh M.P. Eskandai Nasab S. Ansari-Mahyari,

The aim of this study was to refine the position of previously detected quantitative trait loci (QTL) on bovine chromosome 14 affecting milk production traits, using both linkage analysis (LA) and combined disequilibrium and linkage analysis (LDLA) methods, in Iranian Holstein dairy cattle. Analysis data was LRT (likelihood ratio test) and computed using the DMU (estimate the (co)variance compo...

2015
Wendy C. P. Lau Mohd Y. Rafii Mohd R. Ismail Adam Puteh Mohammad A. Latif Asfaliza Ramli

After yield, quality is one of the most important aspects of rice breeding. Preference for rice quality varies among cultures and regions; therefore, rice breeders have to tailor the quality according to the preferences of local consumers. Rice quality assessment requires routine chemical analysis procedures. The advancement of molecular marker technology has revolutionized the strategy in bree...

Journal: :journal of medicinal plants and by-products 0

there is substantial diversity in achillea biebersteinii plants in iran. it has considerable different biological activities including antibacterial, antifungal, antioxidant, insecticidal, herbicidal and wound healing. research improvement for medicinal plants depends on the available genetic diversity. the assessment of genetic variability could increase the information for breeding programs. ...

2013
Gous Miah Mohd Y. Rafii Mohd R. Ismail Adam B. Puteh Harun A. Rahim Kh. Nurul Islam Mohammad Abdul Latif

Over the last few decades, the use of molecular markers has played an increasing role in rice breeding and genetics. Of the different types of molecular markers, microsatellites have been utilized most extensively, because they can be readily amplified by PCR and the large amount of allelic variation at each locus. Microsatellites are also known as simple sequence repeats (SSR), and they are ty...

2014
Jana ŘEPKOVÁ Jan NEDĚLNÍK

Řepková J., Nedělník J. (2014): Modern methods for genetic improvement of Trifolium pratense. Czech J. Genet. Plant Breed., 50: 92–99. This review focuses on trends in genetic improvement of a significant representative forage crop, Trifolium pratense (red clover) classified taxonomically into the agronomically outstanding family Fabaceae. Red clover breeding is aimed at improving traits like p...

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