Trait selection by path and principal component analysis in Jatropha curcas for enhanced oil yield

Abstract

Path analysis was done on different morphological, physiological and oil quality traits of 15, six-years old candidate plus trees of Jatropha curcas to assess their direct and indirect effect on oil yield. Principal component analysis was subsequently done to assess the pattern of the variations in characters and segregate the traits to distinguish parental accessions for plant improvement. Total chlorophyll had a positive direct effect on oil yield and also had indirect effect through single seed weight, single fruit weight and oil content. Male to female flower ratio had negligible direct effect on oil yield but had considerable indirect effect through seed yield per plant. Seed weight, fruit weight and seed yield plant -1 had a high direct effect on oil yield and also had indirect effect through oil content and thus found suitable for direct selection. The first five principal components contributed 75.5% of the total variability. The accessions JCN-14, JCN-08 and JCN-09 had very high values for the first component, while JCN-04 and JCN-05 had lower values for all these variables.

A gene co-expression network model identifies yield-related vicinity networks in Jatropha curcas shoot system

“…The chlorophyll molecules are green pigments that capture light energy during photosynthesis, and the end-product, glucose is either taken up for immediate use by plant or is stored as starch. The J. curcas total chlorophyll content had showed positive implication on oil yield 74 . Latex cells indicate production of lipid and concomitantly, lipid metabolism is seen enriched within the VN2.…”

Phenotypic and Genotypic Diversity Assessment of Jatropha Curcas by Using Rapd Markers to Improve Biodiesel Production

“…Similarly Ghosh et al [21] reported that the seed oil content varied considerably from 27.68% (JCN01) to 37.49% (JCN14) and had high heritability, but it had low PCV and GCV and moderate GA among those different accessions. Kumar et al [22] assessed the variability in seed traits and oil content of 24 accessions of J. curcas collected from different agroclimatic zones of Haryana state, India and reported significant differences in seed size, weight and oil content between accessions.…”

The Jatropha leaf curl Gujarat virus on infection regulates the sugar and tricarboxylic acid cycle metabolic pathways in Jatropha

“…1A) and naturally infected (young plants showing leaf curl symptoms all over the plant, Fig. 1B) leaves of J. curcas from CP9 (IC 565735), an elite Jatropha accession, with high seed and oil yield [16] were collected, with three biological replicates each in the morning, from Nesvad (altitude-314 ft, N 21° 30' 494'' E 072° 02' 185'') experimental elds of CSIR-CSMCRI, Gujarat. Jatropha plantations at Nesvad experimental eld were maintained with practices followed as per Anand et al [17].…”