Relationship of seed traits on initial progeny growth performance and divergence studies in Madhuca latifolia Macb. for further use in tree improvement

Abstract

Evaluation of 23 genotypes of Madhuca latifolia was carried out based on relationship of seed traits with initial progeny growth performance and divergence studies as a scope for further breeding programme. Variability studies revealed that, more than 12 accessions recorded above average for 100-seed weight (247.5±49.2), oil content (43.8±3.7) and volume index (346.0±97.7). The maximum values observed in studied CPTs were as follows: seed length (39.1 mm) in CPT-15 genotype, seed breadth (19.2 mm) in CPT-8 and CPT-9, aspect ratio (2.2) in CPT-6 and CPT-15, 2D surface area (501.4 and 491.6 mm 2 ) in CPT-9 and CPT-3 respectively. CPT-16 recorded maximum for 100 seed weight (282.4 g) and oil content (51.2%). However, maximum volume index was recorded by CPT-3 (578.3 cm 3 ) followed by 3 ). The phenotypic and genotypic coefficients of variations are close to each other for all traits, except volume index that exhibited striking difference between PCV (40.0%) and GCV (19.9%) indicating that for most traits genetic control was quite high. Trait oil content and 100 seed weight expressed high heritability (93.5%, 93.0%) accompanied with moderate genetic advance (17.2%, 15.6%), indicating that, heritability is due to additive gene effects and selection may be effective. At genotypic level 100 seed weight registered positive significant correlation with plant height (0.73), oil content with volume index (0.71). Hence seeds with large breadth, high seed weight and oil content may be selected for producing better progenies. Since traits viz. 100 seed weight and oil content are under strong genetic control, improvement in these characters can bring improvement in volume index. On the basis of the divergence, the 23 genotypes studied were grouped into 5 clusters, indicating wide diversity. The clustering pattern shows that geographical diversity is not necessarily related to genetic diversity. The genotypes in cluster IV and V were most heterogeneous and can be best used for within group hybridization. Cluster means indicated crosses involving under cluster II and V and cluster II and I may result in substantial segregates and further selection for overall improvement of species.

Estimating Net Primary Productivity of Croplands in Indo-Gangetic Plains Using GOME-2 Sun-Induced Fluorescence and MODIS NDVI

“…The genetic diversity may be attributed to different factors such as differential adoption methods, selection criteria, selection pressure and environment factors 18 , which indicates that genetic drift resulted into greater diversity than that of geographic diversity 19 . Earlier studies in Jatropa curcas 12 , Pongamia pinnata 13 and Madhuca latifolia 16 are in line with the present findings, where no relation was observed between genetic diversity and geographical distribution. This can be attributed to the changes that these trees may have undergone during the process of selection.…”

Conservation and selection of plus trees of Pongamia pinnata in Bali, Indonesia

“…These two parameters (beside diameter) are indicator of the maturity of tree (Simon, 1996). Significant positive correlation between oil content and tree height are found in Madhuca latifolia Macb (Divakara 2014) and sunflower (Kaya et al 2007). However, another study by Rao et al (2011) do not find significant correlation between oil content and plant height in pongamia.…”

Divergence Studies of White Willow (<i>Salix alba</i> L.) Germplasm

“…There are chances of obtaining variants with desired characters. It is in this context that diversity analysis using Mahalanobis D 2 statistics has been used in various tree species such as Jatropa curcas 12 , Pongamia pinnata 13,14 , wild apricot 15 and Madhuca latifolia 16 . However, no such information is available with respect to S. alba in the Kashmir valley and as such an effort has been made in this direction.…”