Karyotype analysis and physical mapping of 18S-5.8S-25S and 5S ribosomal RNA loci in species of genus <i>Lens</i> Miller (Fabaceae)

Balyan, H. S.; Houben, Andreas; Ahne, R.

doi:10.1080/00087114.2002.10589267

Cited by 23 publications

(21 citation statements)

References 18 publications

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“…L. nigricans has a slightly different karyotype and different accessions within that species cross with varying degree of success with L. culinaris ssp. culinaris (Balyan et al 2002). As a result, those L. nigricans accessions that do cross with L. culinaris were reclassified as L. culinaris ssp.…”

Section: Biological Speciesmentioning

confidence: 99%

Grain Legumes

2015

Handbook of Plant Breeding

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The field of plant breeding covers a broad range of different species and categories of plants. While there are many techniques and issues that are similar across these species, many more are unique to each genus.The Handbook of Plant Breeding is organized by major crop categories and includes the most up-to-date molecular techniques being used. It will serve as a resource for plant breeding laboratories in both the university and industrial setting.More information about this series at

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Section: Biological Speciesmentioning

confidence: 99%

Grain Legumes

2015

Handbook of Plant Breeding

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“…[2] Both lentil ( L. culinaris Medik) and grass pea ( L. sativus L.) are considered valuable plant resources for diverse types of biological studies, including cytogenetic, mutation genetic, and genomic research. [345] Lentil is one of the predominant winter pulse crops in India, which is extensively cultivated (1.4 m ha) in northern, east-central and eastern parts of the country, being the largest lentil-growing country in the world. [6] The contribution of India to global lentil area and production is 39.52% and 42.42%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Comparative morpho-physiological and biochemical responses of lentil and grass pea genotypes under water stress

Talukdar

2013

J Nat Sc Biol Med

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Background:Both lentil (Lens culinaris Medik.) and grass pea (Lathyrus sativus L.) in the family Fabaceae are two important cool-season food legumes, often experiencing water stress conditions during growth and maturity.Objective:The present study was undertaken to ascertain the response of these two crops under different water stress regimes.Materials and Methods:Different morpho-physiological and biochemical parameters were studied in a pot experiment under controlled environmental conditions. Along with control (proper irrigation, 0 stress), three sets of plants were subjected to mild (6 d), moderate (13 d) and severe (20 d) water stress by withholding irrigation at the appropriate time.Results:Compared with control, plant growth traits and seed yield components reduced significantly in both crops with increasing period of water stress, resulting in lowering of dry mass with more severe effect on lentil compared with grass pea. Foliar Relative Water Content (RWC) (%), K+/Na+ ratio, chlorophyll (chl) a, chl a/b ratio, stomatal conductance and net photosynthetic rate declined considerably in both crops under water stress. Leaf-free proline level increased significantly in both crops, but it decreased markedly in nodules of lentil and remained unchanged in grass pea. Nodulation was also affected due to water stress. The impairment in growth traits and physio-biochemical parameters under water stress was manifested in reduction of drought tolerance efficiency of both crops.Conclusion:Impact of water stress was more severe on lentil compared with grass pea, and modulation of growth traits signified necessity of a detailed strategy in breeding of food legumes under water stress.

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“…Altogether, the orientalis taxon remains the best source among the wild species for the introgression of traits to the cultigen. According to Ladizinsky ( 1979 ), culinaris and orientalis share the same karyotype, although karyotype variants in orientalis have been described Balyan et al 2002 ;Fernández et al 2005 ). Likewise, some extent of intraspecifi c karyotype variations in several Lens species has also been described (Galasso 2003 ;Fernández et al 2005 ).…”

Section: 3mentioning

confidence: 93%

“…However, Van Oss et al ( 1997 ) carried out a comparative restriction fragment length polymorphism (RFLP) analysis of the Lens species chloroplasts. All Lens species possess the same chromosome number (2 n = 14) and share similar karyotypes, which consists of three pairs of metacentric and submetacentric chromosomes, three pairs of acrocentric chromosomes, and a pair of metacentric chromosomes with the nucleolar organizing region (NOR) secondary constriction site proximal to the centromere location , although some karyotype variants have been described (Balyan et al 2002 ). In addition to the standard ssp.…”

Section: Genome Size Ploidy Chromosomes and Karyotypesmentioning

confidence: 98%

“…orientalis appeared to be the most chromosomally variable Lens taxon . Balyan et al ( 2002 ) using fl uorescence in situ hybridization (FISH) identifi ed the NOR region to be located in chromosome 3; chromosome 2 consisted of a submetacentric chromosome with a 5S locus distally located on the long arm (the major site of hybridization), whereas chromosome 6 comprised an acrocentric chromosome with the other 5S locus located proximal on the short arm (minor site). Further data based on Lens homologous probes, which differentially hybridized to the 5S non-transcribed spacer (NTS), allowed a better differentiation between the two 5S loci (Fernández et al 2005 ).…”

Section: Genome Size Ploidy Chromosomes and Karyotypesmentioning

confidence: 99%

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Lentil

Fratini¹,

Vega²,

Sánchez³

2014

Broadening the Genetic Base of Grain Legumes

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Among the cool season legume crops, lentil production has displayed the greatest increase, while cropping of many other grain legumes is actually in decline. This increase is most likely due to a convenient fast cooking coupled to a saving of fuel and time -dehulled lentils cook even faster than milled rice. Worldwide lentil consumption has augmented more than twice the rate of human population growth, with lentil consumption over the past 40 years having increased more than any other food crop. Therefore, continued genetic improvement of lentil is essential in all production regions; nevertheless, without access to and use of diverse germplasm, prospects for yield genetic gain in lentil may be diffi cult to accomplish. Wild Lens accessions represent less than 1 % of the world germplasm collection of this genus, this small fraction likely representing the greatest untapped pool of genetic variation in lentil. Germplasm evaluation together with a successful and targeted hybridization allows for an effi cient breeding and selection of varieties adapted to specifi c environments. The aim of the present chapter is to describe the evolutionary aspects of lentil and assess the gene pool and fl ow for crop improvement, considering levels of diversity and agronomic traits of importance, with emphasis placed on wild species and interspecifi c Lens hybridization, to fi nally conclude with molecular aspects and future prospects of lentil breeding.

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Karyotype analysis and physical mapping of 18S-5.8S-25S and 5S ribosomal RNA loci in species of genus Lens Miller (Fabaceae)

Cited by 23 publications

References 18 publications

Grain Legumes

Grain Legumes

Comparative morpho-physiological and biochemical responses of lentil and grass pea genotypes under water stress

Lentil

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