STUDIES ON VARIETAL CHARACTERIZATION, FORTIFICATION ON SEED YIELD, QUALITY AND LONGEVITY IN PIGEONPEA [Cajanus cajan (L.) Millsp.]
Loading...
Date
2017-01-17
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The field and laboratory experiments were carried out to study the
characterization of cultivars, seed fortification and longevity in pigeonpea during kharif
2014 and 2015. Twenty pigeonpea cultivars selected for characterization study and
significant differences were observed for various morphological traits. Mottled seed
colour pattern distinguished BRG-1 and BRG-3 cultivars from all cultivars having
uniform pattern. Dens pattern of streak on standard petal differentiated the cultivar TS 3R
from all the cultivars. Similarly, sesame kind of leaf shape differentiated cultivar
JKM-189 from all the cultivars. Based on total soluble proteins zymogram, Region A
(> 97.4 KD), B (66.0-97.4 KD), D (29.0-43.0 KD) and E (20.0 to 29.0 KD) were found
useful to distinguish most pigeionpea cultivars. Among 12 SSR markers used to
differentiate the cultivars, four markers viz., CCB-8, CCB-9. PB-3 and PB-8 were found
highly polymorphic. The experiment on seed fortification with ZnSO4 @ 250 mg / kg +
Borax @ 100 mg / kg of seed recorded higher plant growth, seed yield and quality
attributes viz., plant height at 40, 80 DAS and at harvest (59.2, 118.0 and 191.8 cm,
respectively), seed yield (1355 kg / ha), seed germination (89 %), seedling vigour index-I
and II (3217 and 997, respectively), and low electrical conductivity of seed leachate (158
μS ppm-1) as compare to control. BRG-2 and ICP8863 seeds treated with spinosad 45 SC
(2 ppm) and stored in super grain bag recorded higher germination (91 and 87 %,
respectively) and other seed quality attributes as compare to untreated seeds stored in
cloth bag (58 and 76 %, respectively) at the end of 12 months of storage. Whereas the
seed amelioration treatments such as GA3 (400 ppm) and IAA + NAA (150 ppm each)
are the suitable amelioration treatments to improve germination and vigour of aged and
marginal quality pigeonpea seed lots.
Description
Keywords
null