Standardization of Seed Dormancy Breaking Methods and Effect of Seed Priming on Germination and Field Emergence in Kalmegh [Andrographis paniculata (Record no. 70929)

MARC details
000 -LEADER
fixed length control field 02708nam a2200217 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250317153637.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 250317b |||||||| |||| 00| 0 eng d
040 ## - CATALOGING SOURCE
Transcribing agency UAS Dharwad
041 ## - LANGUAGE CODE
Language code English
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 631.4
Author Label ASW
100 ## - MAIN ENTRY--PERSONAL NAME
Name of Author Aswitha Palakolanu
245 ## - TITLE STATEMENT
Title Standardization of Seed Dormancy Breaking Methods and Effect of Seed Priming on Germination and Field Emergence in Kalmegh [Andrographis paniculata
250 ## - EDITION STATEMENT
Edition Statement M Sc (Agri)
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of Publisher Dharwad
Name of Publisher University of Agricultural Sciences
Publication Year 2024
300 ## - PHYSICAL DESCRIPTION
Book Pages 110
Book Size 32 Cms
520 ## - SUMMARY, ETC.
Abstract. ABSTRACT<br/> A study was aimed at standardization of seed dormancy breaking methods and effect of seed priming on germination and field emergence in kalmegh [Andrographis paniculata (Burm. f.) Wall. ex Nees] cv. AK-1. The seeds were subjected to both physical (hot water and sand paper) and chemical scarification (GA3 at 50, 75, 100 and 125 ppm for 15, 30, 45 and 60 min). Among these treatments, seeds treated with 100 ppm GA3 for 15 min exhibited the highest germination percentage (87.55) and seedling vigour. These seeds were then primed using PEG 6000 at osmotic potentials of -0.4, -0.8, -1.2 and -1.6 MPa and GA3 at 50 and 125 ppm. The study revealed that different scarification methods and priming techniques significantly impacted physiological traits such as germination percentage, mean germination time, germination index, time to 50% germination, seedling vigour indices and electrical conductivity. Specifically, seeds osmoprimed at -0.8 MPa at 25 °C for 24 h showed improved germination percentage and seedling vigour, along with reduced mean germination time, time to 50% germination and electrical conductivity. Hence, it was indicated that osmoprimed seeds exhibited superior seed quality attributes as compared to hormoprimed and control seeds Biochemical analyses were carried out to investigate changes in seeds following priming. The results showed that seed priming significantly improved quality of seeds that had undergone dormancy breaking. Enhanced seed viability and vigour was associated with a decrease in highly reactive free radicals, which were neutralized by activity of antioxidant enzymes where in lipid peroxidation marked by the presence of volatile aldehydes and malondialdehyde was reduced by action of superoxide dismutase and catalase enzymes. The study indicated that PEG 6000 treatment with potential of -0.8 MPa at 25 °C for 24 h was more effective in enhancing seed quality compared to other priming methods and potentials.<br/>
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Subject Seed Science and Technology
700 ## - ADDED ENTRY--PERSONAL NAME
2nd Author, 3rd Author Hosamani Jagadish
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha Item type THESIS
Edition M Sc (Agri)
Classification part 631.4
Call number prefix ASW
Suppress in OPAC No
942 ## - ADDED ENTRY ELEMENTS (KOHA)
-- 631_400000000000000
999 ## -
-- 70929
-- 70929
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Home library Current library Date acquired Total checkouts Full call number Barcode Date last seen Copy number Price effective from Koha item type
    Dewey Decimal Classification     University of Agricultural Sciences, Dharwad University of Agricultural Sciences, Dharwad 28/11/2024   631.521 ASW T14103 17/03/2025 1 17/03/2025 THESIS