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Volume 6
Journal of Plant Biochemistry & Physiology
ISSN: 2329-9029
Plant Science 2018
October 29-30, 2018
October 29-30, 2018 | Valencia, Spain
6
th
Global Summit on Plant Science
J Plant Biochem Physiol 2018, Volume 6
DOI: 10.4172/2329-9029-C1-003
Effect of plant growth regulators on morphophysiological and yield parameters of some sesame
(
Sesamum indicum
L.) cultivars
S Behera
1
, A K Padhiyari
2
and
M Jena
2
1
Krishi Vigyan Kendra, Bhawanipatna - OUAT, India
2
Krishi Vigyan Kendra, Sambalpur - OUAT, India
T
he present experiment was conducted in the central farm, OUAT during Rabi season 2014-15 with five sesame varieties
viz. Uma, Amrit, Smarak, Prachi and Nirmala to find the efficiency of growth regulators such as NAA, GA
3
and IAA in
two concentrations of 10 ppm and 20 ppm sprayed at 30 and 45 days after sowing (DAS). The experiment was laid out in split
plot design with three replications. The morphophysiological observations were recorded at different stages of growth with all
varieties due to effect of growth regulators. Significant increase was observed in response to growth regulator on germination
of seeds. The highest percentage of seed germination was recorded in GA
3
at 20 ppm (98.51%). Due to spraying of growth
regulators there was increase of plant height, number of branches and leaf area per plant in all the treatments irrespective of
variety and the highest value was exhibited by Nirmala with regards to above characters. The LAI, RGR, NAR, CGR & LAD
were found to be increased in PGRs treatments over the control. Among the varieties Nirmala exhibited highest value followed
by Amrit. The yield attributing characters such as total dry matter, number of capsules/plant, number of seeds per capsules and
1000 seeds weight were significantly increased among the treatments as well as varieties. Due to the spraying of Plant Growth
Regulators (PGRs) the percentage of increase in yield ranged from a tune of 0.5% in GA
3
at 10 ppm conc. to 24% in GA
3
at 20
ppm conc. over the control. Among the varieties the highest yield was noted in Nirmala (5.60 q/ha) followed by Amrit (5.08
q/ha). In view of the present findings, Nirmala was found to be the highest yielder and higher concentrations of plant growth
regulators were found to be more significant over the control.
srikrushnabehera.ouat@gmail.com