Pigeonpea (Cajanus cajan (L.) Millsp.) and its wild spp. germplasm collection status, diversity distribution and trait-specific germplasm mapping using GIS tools in India

Abstract

A total of 2,456 germplasm accessions of pigeonpea (Cajanus cajan) and its wild spp. having essential geo-coordinates (latitude and longitude)/locality information were analysed for spatial and diversity distribution through GIS tools. Analysis of passport data revealed that maximum number of germplasm accessions are collected from the states of Madhya Pradesh (438 accessions) followed by Jharkhand (387), Andhra Pradesh (326), Telangana (253), Bihar (249), Gujarat (230), Uttar Pradesh (188) and Maharashtra (178). India being the centre of origin and diversity of this crop, collecting resulted in augmentation of 86 landraces from 14 states. Among wild relatives of pigeonpea, only Cajanus scarabaeoides (46) and C. cajanifolius (6) were augmented. GIS mapping of 107 selected trait-specific germplasm (with regard to eight important morpho-agronomic traits) identified few areas -Akola (Maharashtra) for pod bearing length; Srikakulam (Andhra Pradesh) for bold seed; and Banaskantha (Gujarat) for high pod number. Unexplored and underexplored areas as well as crop wild relatives belonging to genepool one and two are identified for future collection.

Grasspea (Lathyrus sativus L.) - a potential leafy vegetable of eastern India

“…The diversity and distribution of these accessions across the areas of study and methods of use by the communities were also recorded. Georeferenced maps were prepared using WGS84 datum and Everest projection systems (Semwal et al 2018). The eld view of grasspea in West Bengal (west Medinapur) and Bihar (Madhubani) are given in the Fig.…”

Poor Competitiveness of Bradyrhizobium in Pigeon Pea Root Colonization in Indian Soils

“…The soil types in these three states located in the south, central, and northern zones are red soil (alfisol), black soil (vertisol) and alluvial soil (inceptisol), respectively, based on the U.S. Department of Agriculture Soil Taxonomy ( Table S1 ). A large number of pigeon pea varieties are cultivated in India, exhibiting a vast genetic and phenotypic diversity of agro-morphological traits, including variations in plant type, branching pattern, pod and seed size, seed color, protein content, grain yield, resistance/tolerance to abiotic and biotic stresses, crop duration, photoperiod sensitivity, and days to flowering and maturity ( 7 ).…”

Construction and validation of core collections in Pisum sp. using different methodologies

“…In practice, the construction of a core collection implies the selection of a limited number of accessions using any kind of information such as passport data and morphological (Hanci and Cebeci, 2018), molecular (Semwal et al, 2018) or biochemical characterizations (Jaggal et al, 2016).…”