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

2017 ◽  
Author(s):  
D. P. Semwal ◽  
S. P. Ahlawat ◽  
K. Pradheep
Keyword(s):  
Cajanus Cajan ◽  
Andhra Pradesh ◽  
Agronomic Traits ◽  
Germplasm Collection ◽  
Uttar Pradesh ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Gis Mapping ◽  
Gis Tools ◽  
Germplasm Accessions

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.

scholarly journals Status of the Ex Situ and In Situ Conservation of Brazilian Crop Wild Relatives of Rice, Potato, Sweet Potato, and Finger Millet: Filling the Gaps of Germplasm Collections

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 638
Author(s):  
Marcelo B. Medeiros ◽  
José F. M. Valls ◽  
Aluana G. Abreu ◽  
Gustavo Heiden ◽  
Suelma Ribeiro-Silva ◽  
...  
Keyword(s):  
Finger Millet ◽  
Ex Situ Conservation ◽  
Gap Analysis ◽  
In Situ Conservation ◽  
Germplasm Collection ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Ex Situ ◽  
The Status

This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled “Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives” supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O’Donell, I. ramosissima (Poir.) Choisy, I. tiliacea (Willd.) Choisy, I. triloba L., and I. cynanchifolia Meisn. The status of the ex situ and in situ conservation of each taxon was assessed using the gap analysis methodology, and the results were used to plan 16 germplasm collection expeditions. Seeds of the collected material were evaluated for viability, and the protocols for seed germination and cryopreservation were tested. The final conservation score, resulting from the gap analysis and including the average of the ex situ and in situ scores, resulted in a classification of medium priority of conservation for all the species, with the exception of I. grandifolia (high priority). The total accessions collected (174) almost doubled the total accessions of these crop wild relatives incorporated in Embrapa’s ex situ conservation system prior to 2015. In addition, accessions for practically absent species were collected for the ex situ conservation system, such as Ipomoea species, Eleusine indica, and Solanum chacoense. The methods used for dormancy breaking and low temperature conservation for the Oryza, Eleusine, and Ipomoea species were promising for the incorporation of accessions in the respective gene banks. The results show the importance of efforts to collect and conserve ex situ crop wild relatives in Brazil based on previous gap analysis. The complementarity with the in situ strategy also appears to be very promising in the country.

Aceria cajani. [Distribution map].

2011 ◽  
Author(s):  
Keyword(s):  
Sri Lanka ◽  
Geographical Distribution ◽  
Cajanus Cajan ◽  
Tamil Nadu ◽  
Andhra Pradesh ◽  
West Bengal ◽  
Uttar Pradesh ◽  
Madhya Pradesh ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Aceria cajani Channabasavanna. Acari: Eriophyidae. Host: pigeon peas (Cajanus cajan). Information is given on the geographical distribution in Asia (Bangladesh, China, Guangdong, Guangxi, Hainan, Yunnan, India, Andhra Pradesh, Bihar, Delhi, Gujarat, Haryana, Karnataka, Madhya Pradesh, Maharashtra, Orissa, Punjab, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal, Myanmar, Nepal, Sri Lanka and Thailand).

Madurasia obscurella. [Distribution map].

1990 ◽  
Author(s):  
Keyword(s):  
Sri Lanka ◽  
Mosaic Virus ◽  
Geographical Distribution ◽  
Cajanus Cajan ◽  
Tamil Nadu ◽  
Andhra Pradesh ◽  
West Bengal ◽  
Uttar Pradesh ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Madurasia obscurella Jacoby Coleoptera: Chrysomelidae, Galerucinae. Attacks Vigna, Glycine, Phaseolus, Cajanus cajan, vector of bean southern mosaic virus. Information is given on the geographical distribution in ASIA, Bangladesh, India, Andhra Pradesh, Bihar, Delhi, Gujarat, Haryana, Maharashtra, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal, Sri Lanka.

scholarly journals Variability in the Global Proso Millet (Panicum miliaceum L.) Germplasm Collection Conserved at the ICRISAT Genebank

Agriculture ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 112 ◽  
Author(s):  
Mani Vetriventhan ◽  
Vania C.R. Azevedo ◽  
Hari D. Upadhyaya ◽  
D. Naresh
Keyword(s):  
Agronomic Traits ◽  
Germplasm Collection ◽  
Pairwise Distance ◽  
Panicum Miliaceum ◽  
Early Maturity ◽  
Large Variability ◽  
Proso Millet ◽  
Broomcorn Millet ◽  
The Usa ◽  
Germplasm Accessions

Proso millet (Panicum miliaceum L.), also known as common millet or broomcorn millet, is an important ancient crop mostly grown for food, feed, and fodder purposes largely in China, Russia, India, and the USA. It is an under-researched and under-utilized crop. Over 29,000 germplasm accessions have been conserved in genebanks globally. Five races (miliaceum, patentissimum, contractum, compactum, ovatum) have been recognized in proso millet based on panicle morphology and shape. The genebank at the International Crops Research Institute for the Semi-Arid Tropics conserves 849 accessions of proso millet originating from 30 countries and represents all five races. Characterization of these germplasm accessions revealed large variability for morpho-agronomic traits, including for days to 50% flowering (26 to 50 days), plant height (20 to 133 cm), and inflorescence length (22 to 400 mm). On average, the race miliaceum was tall (62 cm) with long panicles (209 mm) and ovatum had short plants (46 cm) with small panicles (108 mm). The average Gower’s distance based on 18 morpho-agronomic traits on 841 accessions was 0.261. The race miliaceum had the highest among accessions within race average pairwise distance (0.254), while the distance was the lowest in ovatum (0.192). The races miliaceum and ovatum showed the highest divergence with each other (0.275), while the lowest divergence was observed between compactum and ovatum (0.229). Trait-specific sources were identified for early maturity, tall plants, long inflorescences, and greater seed size. The information on variability and trait-specific sources identified could potentially support proso millet improvement.

Crop wild relatives and their conservation strategies in China

2014 ◽  
Vol 21 (6) ◽  
pp. 750-757
Author(s):  
Yu Yanbo ◽  
Wang Qunliang ◽  
Kell Shelagh ◽  
Maxted Nigel ◽  
V. Ford-Lloyd Brian ◽  
...  
Keyword(s):  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Conservation Strategies

Status of Agricultural Credit and Indebtedness in India: An Analysis

2021 ◽  
pp. 001946622110153
Author(s):  
Suresh Kumar Maurya ◽  
Neha Vishwakarma
Keyword(s):  
Andhra Pradesh ◽  
Uttar Pradesh ◽  
Medium Term ◽  
Agricultural Credit ◽  
Indian States ◽  
Agricultural Household ◽  
Agricultural Households ◽  
Size Groups ◽  
Jel Code ◽  
Land Size

This article attempts to analyse status of agricultural credit and indebtedness in India. The objectives of the study are as follows: (a) to study a comparison of flow of total institutional agricultural credit among different land size groups at all India level; (b) to study a comparison of indebtedness of agricultural households between different size classes of land possessed at both states and all India level and (c) to analyse incidence of indebtedness in major Indian states. It is concluded that mostly, short- and medium-term loans of agricultural purposes are taken for marginal land size groups in India. The percentage of indebted agricultural households to total agricultural household increases as land size increases. The percentage of holdings is less than percentage of indebted agricultural households in Punjab, Uttar Pradesh, Andhra Pradesh, West Bengal, Karnataka, Odisha and Rajasthan. JEL Code: Q14

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