STUDIES ON SEED PRIMING IN SWEET PEA (Lathyrus odoratus L.)
Loading...
Date
2018-10
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UHF, NAUNI
Abstract
ABSTRACT
The present investigation titled, “Studies on seed priming in sweet pea (Lathyrus odoratus L.)” was
carried out at the Experimental Farm of Department of Seed Science & Technology, Dr Y S Parmar University
of Horticulture and Forestry, Nauni, Solan (H P) during 2017-18. The study was carried out in three separate
experiments. The experiment-I was carried under laboratory conditions using Completely Randomized Design
with four replications. The experiment comprised of 14 different seed priming treatments viz., T1(Priming of
seeds with Rhizobium isolate-I for 24 hours), T1 (Priming of seeds with Rhizobium isolate-II for 24 hours), T3
(Priming of seeds with Trichoderma viride @ 1× 105 cfu/ml for 24 hours), T4(Priming of seeds with GA3 @ 50
ppm for 24 hours), T5 (Priming with of seeds GA3 @ 100 ppm for 24 hours), T6(Priming of seeds with GA3 @
150 ppm for 24 hours), T7 (Priming of seeds with GA3 @ 200 ppm for 24 hours), T8( Hydropriming of seeds
with distilled water for 24 hours), T9 (Priming of seeds with PEG-6000 @ -0.5 M Pa for 24 hours), T10 (Priming
of seeds with PEG-6000 @ -1.0 M Pa for 24 hours), T11 (Priming of seeds with solid matrix for 24 hours), T12
(Priming of seeds with cow urine @ 2% for 24 hours), T13 (Priming of seeds with beejamrit @ 10% for 24
hours) and T14 (Control or No priming). Among different priming treatments, T5 i.e. Priming of seeds with GA3
@ 100 ppm for 24 hours recorded maximum values for 100 seed weight (8.09 g), speed of germination (26.25),
germination percentage (87.75 %), seedling length (30.25 cm), seedling dry weight (19.27 mg), seed vigour
index-I (2654.25) and seed vigour index-II (1691.21). The experiment-II was conducted in a Randomized Block
Design and replicated thrice under field conditions. To accomplish this experiment, the seeds were taken
treatment wise as mentioned in the experiment-I. the results obtained indicated that T5 i.e. priming of seeds with
GA3 @ 100 ppm for 24 hours observed maximum values for field emergence (80.25 %), plant height 30 DAS
(29 cm), plant height 60 DAS (56.71 cm), plant height at final harvest (134.17 cm), number of flowers / plant
(33.78), number of flowers / plot (912.15), size of flower (3.06 cm), duration of flowering (48.50 days),
numbers of pods / plant (26.83), number of seeds / pod (7.43), number of seeds/plant (199.35), seed yield /
plant (13.51 g) and seed yield / plot (336.77 g) as well as minimum days taken to first flowering (106.00 days),.
The experiment-III was laid out in a Completely Randomized Design with four replications under laboratory
conditions. The seeds were taken treatment wise harvested from the plants grown under experiment-II. The
results revealed that the seeds harvested from the plants raised from the seeds following priming with GA3 @
100 ppm for 24 hours recorded maximum values for 100 seed weight (6.78 g), speed of germination (24.67),
germination percentage (85.25 %), seedling length (25.82 cm), seedling dry weight (14.71 mg), seed vigour
index-I (2201.19) and seed vigour index-II (1253.85). Hence, it is concluded that for better plant growth,
flowering, maximum seed yield as well as production of quality seeds, the sweet pea seeds be primed with GA3
@ 100 ppm for 24 hours.
Description
Keywords
null