Selection of candidate plus phenotypes of Jatropha curcas L. using method of paired comparisons

Mishra, D. K.

doi:10.1016/j.biombioe.2008.08.004

Cited by 39 publications

(30 citation statements)

References 7 publications

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“…In recent years, Jatropha curcas L., a perennial plant belonging to the family Euphorbiaceae has received considerable interest of the researchers as a potential source of biodiesel. Its multipurpose benefits as a source of green manure, soil ameliorator and improve rural economy by generating huge manpower employment during various stages of its cultivation and downstream processing makes it a potential candidate for large-scale plantation on marginal lands (Rao et al, 2008;Sunil et al, 2008;Kheira and Atta, 2009;Mishra, 2009;Behera et al, 2010). However, the current seed yield of Jatropha for production of bio-fuels is inadequate to completely replace fossil fuels (Ruth, 2008).…”

Section: Introductionmentioning

confidence: 99%

Genetic variation and heritability estimation in Jatropha curcas L. progenies for seed yield and vegetative traits

Kaushik

Deswal

Malik

et al. 2015

JANS

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Abstract:In this study, experiment was conducted on sandy loam soils poor in organic carbon and water holding capacity in southern Haryana, India to determine the best progenies of Jatropha curcas for bio-diesel production. Fifty progenies raised from seed sources collected from nine states of India were evaluated after five years of plantation for growth, seed and oil content traits. The progenies showed significant (P> 0.05) differences for all the traits studied. Maximum seed yield/plant (879.37 g), number of capsules/plant (522.67) and plant height (408.33 cm) was recorded in P-44. Maximum oil content observed in P-37 (36.08%) followed by P-5 (35.64%). The magnitude of phenotypic coefficient of variation (PCV) was higher than the corresponding genotypic coefficient of variation (GCV) for all the characters studied. Heritability was highest for oil content (95.49%) and 100-seed weight (87.75%) followed by seed yield (75.54%). Total capsules/plant exhibited highest genetic advance (92.69%) followed by number of branches per plant (64.32%). Hierarchical Euclidean cluster analysis of all 50 progenies using D 2 statistics was done where the D 2 analysis grouped the progenies into five clusters. The intra cluster distances ranged from 1.33 to 2.72. The maximum inter-cluster distance was observed between cluster II and V (6.43) followed by I and V indicating greater divergence among progenies belonging to these clusters and an attempt to cross the progenies in these clusters should bring out desirable gene combinations. These progenies showed considerable potential which can be tapped for planting and selecting the improved varieties.

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Section: Introductionmentioning

confidence: 99%

Genetic variation and heritability estimation in Jatropha curcas L. progenies for seed yield and vegetative traits

Kaushik

Deswal

Malik

et al. 2015

JANS

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“…Apesar da baixa diversidade genética quantificada por técnicas de marcadores moleculares (Rosado et al, 2010), avaliações agronômicas têm mostrado variabilidade genética para os principais componentes da produção dessa oleaginosa (Mishra et al, 2009 Ainda considerada em fase de domesticação, a viabilidade deste cultivo ainda depende de um incremento de produtividade, a ser realizado com a seleção de plantas e melhoria das condições de ambiente (Drumond et al, 2010;Gouveia et al, 2012;Laviola et al 2012). As novas médias estimadas com o plantio das progênies selecionadas, em toneladas por hectare, foram de 2,34 ton.ha , em Pelotas -RS.…”

Section: Resultsunclassified

Adaptabilidade e estabilidade de progênies de meios-irmãos de pinhão-manso em diferentes regiões do Brasil

et al. 2016

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Programas de melhoramento do pinhão-manso (Jatropha curcas L.) intensificaram-se nos últimos cinco anos, tendo sido selecionadas, localmente, plantas em diversas regiões do Brasil. O objetivo deste trabalho foi quantificar a interação genótipos x ambientes da produção de grãos de pinhão-manso, avaliada em três regiões brasileiras, e o progresso genético obtido com a seleção. A partir de progênies de meios-irmãos, selecionadas pela Embrapa Semiárido e pela EPAMIG, foram instalados, no ano de 2008, três testes de progênies, nos municípios de Planaltina, DF, Nova Porteirinha, MG e Pelotas, RS, utilizando-se delineamento de blocos ao acaso, com três repetições e cinco plantas por parcela. Como testemunhas foram utilizadas sementes de plantas não selecionadas e um dos materiais genéticos comercializados no Brasil. A interação genótipo x ambiente foi significativa. Foram identificadas oito progênies de adaptabilidade geral, três progênies de baixa adaptabilidade, duas progênies de adaptabilidade específica a ambientes favoráveis e duas progêni-es de adaptabilidade específica a ambientes desfavoráveis, em diferentes regiões do Brasil. As estimativas de progresso genético indicam eficiência da seleção massal, com ganhos de 28, 76 e 177%, nos municípios de Planaltina, DF, de Nova Porteirinha, MG, e de Pelota, RS, respectivamente. Observa-se que os ganhos de seleção obtidos pelo método centroide são mais equilibrados entre ambientes e, por isso, preferíveis. As novas médias, estimadas com o plantio das progênies selecionadas, em toneladas por hectare, são de 2,34 ton.ha Adaptability and stability of Jatropha curcas L. progenies in different regions of BrazilPhysic nut (Jatropha curcas L.) breeding programs have intensified in the past five years, locally selecting plants from various Brazilian regions. The objective of this study was to quantify the genotype x environment interaction of the physic nut grain production and the genetic progress obtained with the selection. From Half-sib progenies selected by Embrapa and EPAMIG, in 2008, three progeny trials were installed in the cities of Planaltina-DF, Nova Porteirinha-MG and Pelotas-RS, using a randomized block design with three replications of five plants per plot. Non-selected plant seeds and genetic material commercialized in Brazil were used as control. The genotype x environment interaction was significant for the J. curcas grain yield expression. We identified eight progenies of broad adaptability, three progenies of low adaptability, two progenies of specific adaptability to favorable environments and two progenies of specific

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“…In contrast to the low genetic diversity measured by molecular markers Resende et al, 2008), agronomic evaluations have shown variability of several seed and oil yield components (Basha et al, 2009;Raiger et al, 2011;Costa et al, 2010;Drumond et al, 2010;Mishra, 2009). Although the use of molecular markers allows a fast quantification of genetic diversity, the evaluation of random genomic variations is often indicative of sequence polymorphisms not related to traits of agronomic interest (Resende et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Genetic progress in seed yield of physic nut (Jatropha curcas L.)

Rodrigo¹,

Hilder²,

eacute³

et al. 2015

Afr. J. Agric. Res.

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Physic nut (Jatropha curcas L.), a tropical shrub with medicinal properties has not undergone efficient selection for high seed yield or oil production over the years. Predictions on seed yield of this oilseed plant were based on isolated observations that did not consider the reductions in plant growth due to higher planting densities. The objective of this study was to quantify the genetic progress of seed yield using mass selection in a physic nut population at production age, evaluated in the Amazonic tropical climate. Genetic variability for seed yield exists among J. curcas genotypes, denoting the possibility of genetic progress through plant selection. There was also a tendency for the genotypes to maintain their genetic superiority over the time. The estimated genetic progress from the selection of 10 superior genotypes was 0.67 kg.plant -1 , which, compared to the overall mean, corresponds to a selection gain of over 99%. The new mean of these plants was 1.35 kg.tree -1 , equivalent to seed yield of 2.25 tons.ha -1 . For breeding, a minimum number of 30 genotypes were considered to ensure the genetic progress over the generations. The estimated mean of a recombination unit composed of the 30 superior genotypes was 1.17 kg.plant -1 , equivalent to a seed yield 1.95 tons ha -1. Although accurate, the genetic progress estimated in this study does not appear to provide a qualitative increase in the yield of this oilseed. New breeding strategies may consider the use of crossings of divergent plants with better agronomic traits.

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Selection of candidate plus phenotypes of Jatropha curcas L. using method of paired comparisons

Cited by 39 publications

References 7 publications

Genetic variation and heritability estimation in Jatropha curcas L. progenies for seed yield and vegetative traits

Genetic variation and heritability estimation in Jatropha curcas L. progenies for seed yield and vegetative traits

Adaptabilidade e estabilidade de progênies de meios-irmãos de pinhão-manso em diferentes regiões do Brasil

Genetic progress in seed yield of physic nut (Jatropha curcas L.)

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