eprintid: 7179
rev_number: 7
eprint_status: archive
userid: 30
dir: disk0/00/00/71/79
datestamp: 2013-10-18 14:23:07
lastmod: 2013-10-18 14:23:07
status_changed: 2013-10-18 14:23:07
type: book_section
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
creators_name: Janila, P
creators_name: Nigam, S N
icrisatcreators_name: Janila, P
icrisatcreators_name: Nigam, S N
affiliation: ICRISAT(Patancheru)
country: India
title: Phenotyping for Groundnut (Arachis hypogaea L.) Improvement
ispublished: pub
subjects: s1.3
full_text_status: restricted
abstract: Groundnut (Arachis hypogaea L.) is grown world over for oil and food uses. It is a self-pollinated crop with low genetic diversity. The origin of the crop from single hybridization event followed by chromosome doubling as well as crossing barriers of cultivated species with wild species due to ploidy differences rendered the crop with narrow genetic variability. Developing new varieties with increased yield potential and resistance to biotic and abiotic stresses that meet the needs of the growers, processors and consumers is the primary objective of groundnut breeding. In this chapter, we discuss about phenotyping tools used in groundnut improvement programs for various targeted traits. Both field and laboratory tools are described to screen for resistance to diseases caused by fungi, bacteria, virus and nematodes. Phenotyping based on Cumulative Thermal Time (CTT) is used to select for early maturity. Phenotyping for complex traits can be challenging. Either empirical approach that involves measuring the yield under imposed drought stress or salinity conditions or trait based approach using surrogates or a combination of both are used for phenotyping abiotic stresses. Phenotyping for Aspergillus contamination needs improvement to derive reliable and reproducible results. Estimation of quality and nutritional parameters generally involves use of destructive and laborious chemical or physical procedures. Near infrared reflectance spectroscopy (NIRS), a robust and non-destructive method is gaining popularity for estimation of oil, protein, carbohydrate and fatty acid contents. Methods for estimating oil, protein, sugar and micronutrient concentrations and fatty acid composition of seeds and haulm quality traits are described
date: 2013
date_type: published
publisher: Springer New York
place_of_pub: New York
pagerange: 129-167
pages: 211
refereed: TRUE
isbn: 978-1-4614-8320-5
book_title: Phenotyping for Plant Breeding
official_url: http://dx.doi.org/10.1007/978-1-4614-8320-5_5
related_url_url: http://scholar.google.co.in/scholar?as_q=%22Phenotyping+for+Groundnut+%28Arachis+hypogaea+L.%29+Improvement%22&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Janila, P and Nigam, S N  (2013) Phenotyping for Groundnut (Arachis hypogaea L.) Improvement.   In:  Phenotyping for Plant Breeding.   Springer New York, New York, pp. 129-167.  ISBN 978-1-4614-8320-5     
document_url: http://oar.icrisat.org/7179/1/Phenotyping_Groundnut_Chap-5_2013.pdf