Brief communication. A major gene for time of flowering in chickpea

Kumar, Jitendra; Rheenen, H. A. van

doi:10.1093/jhered/91.1.67

Cited by 91 publications

(86 citation statements)

References 16 publications

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“…; Huyghe, 1998), and genetic variation for flowering is being utilized in all of these (e.g. Wallace et al, 1993;Sarker et al, 1999;Kumar and van Rheenen, 2000). A better understanding of flowering control in legumes will also benefit general understanding of the flowering process.…”

mentioning

confidence: 99%

Conservation of Arabidopsis Flowering Genes in Model Legumes

et al. 2005

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The model plants Arabidopsis (Arabidopsis thaliana) and rice (Oryza sativa) have provided a wealth of information about genes and genetic pathways controlling the flowering process, but little is known about the corresponding pathways in legumes. The garden pea (Pisum sativum) has been used for several decades as a model system for physiological genetics of flowering, but the lack of molecular information about pea flowering genes has prevented direct comparison with other systems. To address this problem, we have searched expressed sequence tag and genome sequence databases to identify flowering-gene-related sequences from Medicago truncatula, soybean (Glycine max), and Lotus japonicus, and isolated corresponding sequences from pea by degenerate-primer polymerase chain reaction and library screening. We found that the majority of Arabidopsis flowering genes are represented in pea and in legume sequence databases, although several gene families, including the MADS-box, CONSTANS, and FLOWERING LOCUS T/TERMINAL FLOWER1 families, appear to have undergone differential expansion, and several important Arabidopsis genes, including FRIGIDA and members of the FLOWERING LOCUS C clade, are conspicuously absent. In several cases, pea and Medicago orthologs are shown to map to conserved map positions, emphasizing the closely syntenic relationship between these two species. These results demonstrate the potential benefit of parallel model systems for an understanding of flowering phenology in crop and model legume species.The change from vegetative to reproductive growth is a critical developmental transition in the life of a plant, and the induction, expression, and maintenance of the flowering state are regulated by many external and endogenous factors. A vast number of applied and fundamental studies have demonstrated the importance of light (through daylength and light-quality effects) and temperature (through vernalization and ambient temperature effects) as the main environmental regulators of flowering. However, other factors, including nutrient status, endogenous hormones, stress, and the developmental state of the plant, can also be important. Even with respect to light and temperature, great diversity in responsiveness exists within and between different plant species. These differences are important in the adaptation of species to particular latitudinal and climatic regions, and have also been extremely important for determining the environments and agronomic regimes under which crop species can be most effectively grown.The flowering process has been subject to detailed genetic analysis in Arabidopsis (Arabidopsis thaliana). As a small, weedy annual, Arabidopsis is responsive to a wide range of factors and has been invaluable in outlining the major genetic pathways that are likely to function in the control of flowering responses to photoperiod, vernalization, and hormone responses (Amasino, 2004;Boss et al., 2004;Putterill et al., 2004). It is likely that many of the genetic mechanisms discovered in Arabidopsis ...

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confidence: 99%

Conservation of Arabidopsis Flowering Genes in Model Legumes

et al. 2005

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“…Seed coat as a morphological marker was associated with a QTL for FT, but the morphological marker was unlinked (data not shown). The morphological marker with a LOD score above 3.0 was associated with QTL for FT in the Haymana-1998, -1999, and -2000and Pullman-2000 environments, but the LOD score of the morphological marker was lower than LOD 3 in Haymana-2001 (LOD = 2.22) and Haymana-2003 (LOD = 1.96). …”

Section: Field Results For Flowering Timementioning

confidence: 92%

“…FT is also a very significant factor in crop yield. As an example, in chickpea, as a legume crop, number of days to flowering is an important trait for adaptation and productivity under environments with late-season drought and higher temperatures (Kumar and Van Rheenen, 2000) as well as in short-season environments (Anbessa et al, 2006). Early flowering can increase yearly crop production by allowing different sets of crops, such as chickpea, per growing season.…”

Section: Introductionmentioning

confidence: 99%

Major quantitative trait loci for flowering time in lentil

Kahriman¹,

Temel²,

Aydoğan³

et al. 2015

Turk J Agric For

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Quantitative trait loci (QTLs) for flowering time (FT) in lentil were located using a recombinant inbreed line population derived from an intraspecific cross of Precoz × WA8649041. Experiments for FT were conducted in 2 locations (Haymana, Turkey and Pullman, WA, USA) for 5 years (from 1998 to 2002 in both Pullman and Haymana). A linkage map was constructed using 149 markers (RAPD, AFLP, ISSR, SSR, and 2 morphological markers) located on 11 linkage groups (LGs). Analysis of variance of FT was found to be significant for all locations and years. One major QTL for FT was identified on LG6 across all environments, indicating the stability of the QTL. The LOD scores for FT varied between 3.25 and 13.64 among the environments. The markers UBC318_2, SSR212_1, UBC220, M09a, and M09 on the QTL region were statistically significant in all environments. The SSR212_1 marker itself explained 57% of total genotypic variation according to the average of all environments, indicating the potential use of these markers in marker-assisted selection studies.

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“…The variability found in C. judaicum for early flowering (Robertson et al, 1997) needs to be exploited to breed early maturing genotypes. The involvement of a single recessive locus in controlling early time of flowering and dominant delayed flowering has been reported (Kumar and van Rheenen, 2000). Genotypes with the recessive allele in homozygous condition escape drought at the end of season by nearly 3 weeks in receding soil moisture situations and are known to stabilise chickpea seed yields in such environments.…”

Section: Droughtmentioning

confidence: 99%

Chickpea Improvement: Role of Wild Species and Genetic Markers

Singh

Sharma

Varshney

et al. 2008

Biotechnology and Genetic Engineering Reviews

111

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Chickpea is an important grain legume of the semi arid tropics and warm temperate zones, and forms one of the major components of human diet. However, a narrow genetic base of cultivated chickpea (Cicer arietinum L.) has hindered the progress in realizing high yield gains in breeding programs. Furthermore, various abiotic and biotic stresses are the major bottlenecks for increasing chickpea productivity. Systematic collection and evaluation of wild species for useful traits has revealed presence of a diverse gene pool for tolerance to the biotic and abiotic stresses. Relationships among the species of genus Cicer are presented based on crossability, karyotype and molecular markers. The reproductive barriers encountered during interspecific hybridization are also examined. Recent information on genetic linkage maps, comparison of isozymes

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Brief communication. A major gene for time of flowering in chickpea

Cited by 91 publications

References 16 publications

Conservation of Arabidopsis Flowering Genes in Model Legumes

Conservation of Arabidopsis Flowering Genes in Model Legumes

Major quantitative trait loci for flowering time in lentil

Chickpea Improvement: Role of Wild Species and Genetic Markers

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