Open AccessDevelopment of Screening Method for Moisture Deficit Tolerance of Black Pepper Genotypes
Author(s) -
M. Alagupalamuthirsolai,
V. Srinivasan,
C. Sarathambal,
C. K. Thankamani,
K. S. Krishnamurthy,
K.P. Subila
Publication year - 2021
Publication title -
international journal of environment and climate change
Language(s) - English
Resource type - Journals
ISSN - 2581-8627
DOI - 10.9734/ijecc/2021/v11i230372
Subject(s) - pepper , horticulture , piper , moisture stress , moisture , crop , peg ratio , sowing , cutting , microbiology and biotechnology , biology , agronomy , botany , chemistry , organic chemistry , finance , economics
Black pepper is basically a rainfed crop in India. Drought is the chief abiotic stress causing up to 50-80% crop loss in black pepper. Lack of precise screening methodology to develop moisture stress tolerant lines is a limiting factor in black pepper productivity. To develop a rapid screening methodology, a laboratory experiment was conducted with rooted black pepper cuttings under hydroponic culture. The experiment was designed in a completely randomized with four replications. Moisture stress was imposed with six different concentrations of Polyethylene glycol-6000 (5, 8, 10, 12, 15 and 20 per cent) along with control in black pepper cv. Panniyur-1, IISR-Thevam, IISR-Sreekara and IISR-Girimunda. The results showed that Panniyur-1, IISR-Thevam, IISR-Sreekara and IISR-Girimunda at the PEG-6000 concentrations of 8%, 10%, 10%, 10% respectively reduced per cent cuttings survival almost by 50% Lethal dose (LD50) after 10 days of PEG stress and also, a signicant increase in proline was recorded up to 10% PEG-6000. Hence, 10% PEG-6000 appears to be an ideal concentration for screening black pepper genotypes for moisture stress tolerance.