EVALUATION AND IDENTIFICATION OF EARLY MATURING PIGEONPEA [Cajanus cajan (L.) Millsp.] GENOTYPES FOR PHOTOINSENSITIVITY
Loading...
Date
2015-06-30
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
Abstract
The present investigation was carried out with the objectives to evaluate and to
identify early maturing photoinsensitive pigeonpea genotypes and their morphological
characterization, along with study G × E interaction and screening of early maturing
genotypes against major pests and diseases. The experiment was conducted during Kharif,
2014 with 21 pigeonpea genotypes, comprised of 16 early maturing genotypes from ICRISAT
and five check varieties, with four dates of sowing (15th June, 15th July, 15th August and 15th
September) at Agriculture Research Station, Kalaburagi, UAS, Raichur.
Photoperiod response of genotypes was estimated as photoperiod sensitivity (%) of
particular genotypes. Based on the mean photoperiod sensitivity (%) across four dates of
sowing, the early maturing genotypes ICPL-2011252 (6 %) and ICPL-20340 (7 %) displayed
lower magnitude of photoperiod sensitivity (%) along with other early maturing genotypes.
On the other hand, checks Maruti (25%) and GC-11-39 (23 %) displayed the higher
magnitude of photoperiod sensitivity (%). Morphological characterization of 16 early
maturing genotypes revealed that genotypes were differing for 7 out of 20 characters studied
viz., plant growth habit, base petal colour, steaks on base petal, pod size, plant height, seed
colour and seed shape.
Quantification of G × E interaction and estimation of stability parameters revealed
that, there was significant influence of environment on genotypes. The genotypes MN-5 and
ICPL-20337 were found stable for seed yield kgha-1. The incidence of Helicoverpa and
Maruca increased with delay in sowing from June to August a month interval and early
maturing genotypes recorded higher total pod damage (%) than checks like TS-3R and
Maruti. However, these genotypes showed resistant and moderate disease reaction to
Fusarium wilt.
Description
Keywords
null
Citation
130