Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810023076
Authors: VINAYA S. SALIMATH
Advisor: BASAVE GOWDA
Title: STUDY OF SCREEN APERTURE SIZE AND STORAGE CONDITIONS IN GREEN GRAM (Vigna radiata L.)
Language: en
Type: Thesis
Agrotags: null
Abstract: The lab experiment on the study of screen aperture size and storage conditions in green gram (Vigna radiata L.) were undertaken during 2010 to 2011, in the Department of Seed Science and Technology, College of Agriculture, UAS Raichur. The main experiment divided into two sub experiments as a) evaluation of storage potential of green gram seeds ,consisted of two factors viz., storage conditions (S), ambient storage condition (S1) and commercial cold storage condition (S2) as factor I. Factor II is containers (C), cloth bag (C1), polylined gunny bag (C2), high density polythene bag (C3). There were six treatment combinations. The experiment was carried out in completely randomised design with factorial concept in four replications. The required quantity of Shinymoong variety seeds were kept in different containers and placed in both commercial cold storage and ambient storage conditions. Observations on various seed quality parameters were recorded bimonthly. The seeds stored in polylined gunny bag and placed in commercial cold storage (S2C2) recorded highest germination (91.25%), root length (13.72 cm), shoot length (10.60 cm), seedling length (24.33 cm), seedling vigour index (2219), seedling dry weight (108.50 mg), dehydrogenase activity (0.493 OD value), field emergence (88.25%) and lower seed moisture content (7.68%), electrical conductivity (0.770 dsm-1), seed infection (3.50%), insect damage (0.37%). Whereas, the lowest germination (80.25%), root length (12.51 cm), shoot length (9.42 cm), seedling length (21.93 cm), seedling vigour index (1840), seedling dry weight (103.25 mg), dehydrogenase activity (0.405 OD value), field emergence (77.25%) were recorded for seeds stored in cloth bag and placed in ambient condition, where higher electrical conductivity (0.841 dsm-1), seed infection (9.50%), insect damage (4.25%) was observed after ten months of storage period. Among the different containers polylined gunny bag and between storage conditions, commercial cold storage recorded higher values for positive seed quality parameters and lower value for negative seed quality parameters. The sub experiment b) study of screen aperture size in green gram it consists of two varieties viz., G1 -Shinymoong and G2-SML-668 and screen sizes as S1-2.50 mm, S2-2.8 mm, S3-3.0 mm, S4 -3.25 mm and ungraded(S5) seeds as control. Among the screen aperture size, the Shinymoong seeds retained on 3.25 mm screen recorded higher physical purity, pure live seed, germination, shoot length, root length, seedling vigour index (99.47%, 90.68%, 91.16%, 12.51 cm, 14.70 cm, 2462 respectively) and lower values for seed recovery (93.41%), inert matter (0.52%) and electrical conductivity (0.677 dSm-1) whereas, germination, shoot length, root length, seedling vigour index, field emergence (84.0%, 11.78 cm, 13.47 cm, 2156, 80% respectively), were lowest in SML-668 variety seeds retained on 2.5 mm Screen, and it recorded higher seed recovery (98.5%). Among the screen sizes S4 -3.25 mm and between varieties Shinymoong recorded higher values for seed quality parameters.
Subject: Seed Science and Technology
Theme: STUDY OF SCREEN APERTURE SIZE AND STORAGE CONDITIONS IN GREEN GRAM (Vigna radiata L.)
These Type: M.Sc
Issue Date: 2011-08-30
Appears in Collections:Thesis

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