STUDIES ON SEED PHYSIOLOGICAL QUALITY OF SUNFLOWER (Helianthus annuus L.) HYBRIDS FOR ABIOTIC STRESSES
Loading...
Date
2017-12-27
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Sunflower seed production affected due to biotic and abiotic stresses. High
drought and salinity are common environmental problems which affecting seed
germination and plant growth especially in arid and semi-arid regions. Sunflower is an
oilseed crop rated moderately salt and drought tolerant crop, but it is sensitive to salt and
drought at germination and seedling stages. The effect of salt stress (NaCl) and water
stress (PEG-6000), on germination and early seedling growth was studied KBSH-1,
KBSH-41, KBSH-44 and KBSH-53 of sunflower hybrids. Among hybrids, highest
germination and seedling emergence was observed in KBSH-44, while at -0.6 M Pa
concentrations of PEG-6000 were found to be critical lethal dose for all the characters.
Among hybrids, the highest germination and seedling emergence was observed in KBSH-
1, whereas increased salt concentration rendered in germination and seedling growth.
Plant growth also decreased with increasing PEG concentrations. In addition,
there were differences between the sunflower hybrids in terms of their response to
drought and salinity. Among the hybrids, highest seed yield per plant was observed in
KBSH-44 in PEG induced stress and the seed yield per plant found to be significant
under non moisture stress condition than moisture stress conditions. Among the hybrids
highest seed yield per plant was recorded in KBSH-1 (H1) in salinity stress.
Description
Keywords
null