Hyderabad, India
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Udaya Sankar A.,National Bureau of Plant Genetic Resources Regional Station | Anitha K.,National Bureau of Plant Genetic Resources Regional Station | Sivaraj N.,National Bureau of Plant Genetic Resources Regional Station | Meena Kumari K.V.S.,National Bureau of Plant Genetic Resources Regional Station | And 3 more authors.
Legume Research | Year: 2015

Twenty-one (21) diverse horsegram accessions collected from various parts of Andhra Pradesh state were screened in greenhouse along with four check varieties against Colletotrichum dematium, causal agent of anthracnose disease. Based on Per cent disease index (PDI), one accession, IC470275 was identified as immune and the remaining accessions were either moderately resistant or susceptible. Grid maps generated using DIVA-GIS indicated the areas with highest Shannon diversity index for PDI and highest coefficient of variation recorded for horsegram accessions collected from Anantapur district of Andhra Pradesh. The results also indicated that diverse accessions for reaction against C. dematium can be sourced from Anantapur district of Andhra Pradesh. © 2015, Agricultural Research Communication Centre. All rights reserved.


Kamala V.,ICAR National Bureau of Plant Genetic Resources | Gupta A.J.,ICAR National Bureau of Plant Genetic Resources | Gupta A.J.,Directorate of Onion and Garlic Research | Rajput A.S.,ICAR National Bureau of Plant Genetic Resources | And 9 more authors.
Indian Journal of Horticulture | Year: 2014

Onion germplasm was collected from Chhattisgarh (Bastar Plateau) and Maharashtra (central eastern Vidarbha region) in Peninsular India during May 2009 in collaboration with Directorate of Onion and Garlic Research, Pune and Indira Gandhi Agricultural University, Jagdalpur to assess the diversity in bulb traits for their potential utilization in onion improvement. Ninety-two samples (bulbs-91; seeds-1) were collected from 25 villages and 15 mandals. Wide range of variation was observed for bulb shape, colour and size, number of hearts and total soluble solids. Majority of the accessions possessed globe (32%), thick flat (24%) and ovate (23%) shapes. Major colours obtained were dark red (56%), light red (27.4%) and white (13.2%). Bulb weight showed maximum diversity, followed by neck thickness, equatorial diameter and polar diameter. Highest TSS of 14.5% was recorded in IC573752 (dark red, thick flat, Lohandiguda, Bastar). The thinnest neck (0.18 cm) was found in IC573779 (dark red, ovate) from Bastar, Chhattisgarh. Twenty-five accessions were observed with single centres including IC573729 (light red, ovate, Bastar), IC573743, IC573769 (dark red, globe, Bastar), IC573780 (light red, flat globe, Bastar), IC573794 (white, ovate, Gadchiroli) and IC573810 (white, thick flat, Chandrapur). Largest bulbs were observed in IC573822 (105 g) and IC573820 (97 g) both light red and thick flat, from Yavatmal and IC573774 (94.5 g, light red, globe) and IC573781 (93.5 g, dark red, flat globe) from Bastar. These accessions hold potential for utilization in breeding programmes for further genetic improvement of onion. Specific diversity rich areas identified can be developed into onion villages for on-farm in-situ conservation. © 2015, Horticulture Society of India. All rights reserved.


Sekhar J.C.,Winter Nursery Center | Lakshmi Soujanya P.,Winter Nursery Center | Chikkappa G.K.,Directorate of Maize Research | Sunil N.,Winter Nursery Center | And 3 more authors.
Electronic Journal of Plant Breeding | Year: 2016

Sesamia inferens (Walker) is the most important Rabi pest of maize causing serious losses in India. The objective of the study was to identify maize landraces with high levels of resistance to S. inferens by screening 427 maize land races sourced from different agro-ecological regions, along with CM 500 and CML 451 as resistant and susceptible checks, respectively under natural conditions during Rabi, 2012-13. The range of average per cent dead hearts observed in land races was 0.0 to 57.14%. The most resistant land races were IC258225, IC319533, IC321053, IC321110, IC321111, IC321119, IC326886, IC331795, IC 338827 and IC 350198 which showed no dead hearts infestation while the susceptible were IC331939, IC340368, IC369174, IC369184, IC406420, IC549985, IC549989, IC549990, IC569669 and IC547811 suffered to the extent of 46.15 to 57.14 % dead hearts. There was no dead hearts infestation on resistant check CM 500 while susceptible check CML 451 showed 50-100 % dead hearts. These resistant land races identified are recommended for use in the development of S. inferens resistant maize.


Sivaraj N.,National Bureau of Plant Genetic Resources | Kamala V.,National Bureau of Plant Genetic Resources | Pandravada S.R.,National Bureau of Plant Genetic Resources | Sunil N.,Winter Nursery Center | And 5 more authors.
Open Access Journal of Medicinal and Aromatic Plants | Year: 2014

The study of floristic ecology and phenology of medicinal plants in intact tropical ecosystems is important to understand the dynamics of medicinal plant species evolving in particular ecosystems. Of the 172 taxa occurring in the southern most hill (Shevaroys) of the Eastern Ghats, 41% represented scrub, 35% semi-evergreen and 24% deciduous vegetation types. Among the gender distribution, hermaphrodite category dominated (79%) in the medicinal flora followed by monoecy (16.3%) and dioecy (4.7%). Majority of medicinal arborescent taxa was found to flower during the months of March and April (dry period) and only a few were in bloom during August and December, while herbaceous taxa flowered during December-February. Majority of tree taxa were found to fruit during the dry season (April-May) with a peak during April while the herbaceous medicinal plants fruited during January-March. The nature of fruits types recorded was fleshy (59), dry dehiscent (75) and dry indehiscent (38). Higher temperature conditions were observed to be conducive to flowering and fruiting among the arborescent taxa whereas cooler conditions were favourable for herbaceous taxa. In Eastern Ghats the fruiting phenology pattern closely follows that of the flowering. The occurrence of various types of fruits gives an insight to the understanding of the evolution of seed dispersal behavior in plants. Most probably in Eastern Ghats the biotic interaction has evolved as a sequel to this pattern and timing of fruiting. Data generated in the study can be used for planning proper management strategies of medicinal flora in Eastern Ghats region, thus, ensuring “Development without Destruction”. © 2014, Open Access Journal of Medicinal and Aromatic Plants. All rights reserved.


Sunil N.,Winter Nursery Center | Kumar V.,Indian International Crops Research Institute for the Semi Arid Tropics | Abraham B.,National Bureau of Plant Genetic Resources | Sivaraj N.,National Bureau of Plant Genetic Resources | Varaprasad K.S.,Oilseeds Research
Thai Journal of Agricultural Science | Year: 2014

Diverse germplasm accessions of Jatropha (Jatropha curcas L.) collected from different eco-geographical regions of South India were studied for differential branching pattern involving branching angles between the Main and Primary branches (M-P), primary and secondary (P-S) and secondary and tertiary (S-T). Correlation of the various branching angles, contributing to the tree structure, with other agro-morphological traits viz. number of primary branches, canopy spread, pedicel length, number of fruit clusters and yield was studied. Significant correlation was recorded for branch angle of 750-950 between M-P branches for plant height and bole length. An angle of 60-750 between primary to secondary (P-S) branches had highly significant correlation with bole length. S-T branch angle ranging between 60-750 had significant correlation with plant height, bole length and yield. Accession, IC541688 (with branch angle 77.50 between M-P, 61.60 for P-S and 48.30 for S-T) and IC544654 (710 between M-P, 550 between P-S and 480 between S-T) recorded high yield. The results showed that branching pattern as a tool for identification of promising genotypes may be effective.


Shanthi P.,Allahabad University | Shanthi P.,Winter Nursery Center | Babu G.S.,Allahabad University | Satyanarayana E.,Winter Nursery Center | Kumar R.S.,Winter Nursery Center
Indian Journal of Genetics and Plant Breeding | Year: 2010

Studies on combining ability, stability and G x E interaction were carried out at two locations (Hyderabad and Allahabad) and in two seasons (Kharif 2003 and Kharif 2004) for grain yield and three quality parameters viz., protein content, oil content and tryptophan content in 45 single cross hybrids developed using 10 × 10 diallel set (excluding reciprocals). From this study it is inferred that, the three hybrids P 4 × P 7, P 2 × P 6 and P 5 × P 10 were considered as most stable and good specific combiners for grain yield and quality parameters (protein, oil and tryptophan content) along with higher per se values for the four characters studied. These hybrids can be exploited as better QPM hybrids for commercialization across the wide environments through heterosis breeding and also for the derivation of QPM inbred lines in segregating generations. Among the ten parents, the parents P 3 and P 1 were found to be the best parents for grain yield, while, the parents P 4, P 7 and P 2 for protein, oil and tryptophan content.

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