EFFECT OF PRE SOWING SEED TREATMENT ON SEED YIELD AND INFLUENCE ON SEED QUALITY PARAMETERS UNDER DIFFERENT TEMPERATURE AND AGEING TREATMENT IN CUMIN (Cuminum cyminum L.)
Loading...
Date
2017
Authors
VRUSHANK M. TRIVEDI
Journal Title
Journal ISSN
Volume Title
Publisher
AAU, Anand
Abstract
The present investigation on “Effect of pre sowing seed treatment on seed yield and influence on seed quality parameters under different temperature and ageing treatment in cumin (Cuminum cyminum L.)” was carried out at Department of Seed Science and Technology farm and laboratory, BACA, AAU, and Anand during rabi 2014-15. Two varieties were taken under considerations, viz., Gujarat Cumin-1 and Gujarat Cumin-4. The field experiment was laid out in Randomized Block Design (Factorial concept) with three replications comprising seven treatment combinations. The laboratory experiment was laid out in Completely Randomized Design (CRD Factorial concept) with four temperature treatments and three repetitions and three ageing treatments with four repetitions.
Cumin is an annual herbaceous plant belonging to family umbelliferae of dicotyledonous group. It is native to Egypt and the Mediterranean region. The production and productivity of cumin is decreasing year after year due to
………...………………….…………………………………………………...Abstract
ii
several reasons. Non availability of good quality seed, slow and uneven germination, low adoption of seed production technologies, degradation of seed quality due to microbial load, heavy infestation of diseases and pests, traditional harvesting & processing, unscientific and unhygienic handling at post-harvest and storage are the major problem in realizing the production potential of cumin. Poor physical purity and seed germination directly affects the establishment of plant population and causing diseases in the field conditions leading to poor seed yield in cumin. Hence, seed treatment is one of the method adopted for quality seed production as it not only reduces the deleterious effects of damage to seed viability and vigour but also provides better avenues for their establishment, growth and development of seedlings. However, reports on pre-sowing seed treatments and seed longevity studies on cumin are very scanty.
The pre-sowing treatments and varieties shows significant effect on field emergence (%), plant height (cm), number of umbel, number of seeds per plant, seed yield per plant (g), 1000 seed weight (g) and seed yield per plot (g).
Significantly maximum field emergence was found in the variety Gujarat Cumin-1 had (69.20%), by treatment GA3 (71.88%) and their interaction (74.82%). The maximum plant height was attained by the Gujarat Cumin-1 (37.23 cm) and by treatment T. asperilium (38.63 cm) with their highest interaction (38.86 cm). Also the maximum numbers of umbel were recorded with the variety GC-4 (84.57) and treatment T. asperilium (86.66) with their significant interaction (101.33). Similarly higher numbers of seeds
………...………………….…………………………………………………...Abstract
iii
per plant were recorded in GC-4 (1252.9) and treatment T. asperilium (1402.8) with their highest corresponding interaction (1610.6). The maximum seed yield per plant was noted with variety GC-4 (5.78g) and treatment T. asperilium (6.40g) with highest interaction of (7.45 g). The maximum 1000 seed weight was in variety GC-4 (4.60 g) and treatment T. asperilium (4.75 g) with their interaction (4.90 g) and seed yield per plot was recorded maximum in variety GC-4 (221.28g) and in treatment T. asperilium (247.80g) with significant interaction (300.35 g).
The different temperature regimes also showed significant effect on variety. Significantly maximum first count was in variety GC-1 it was noted (28.25%) and treatment 20oC (28.16%) with their corresponding interaction (45.66%). The maximum germination percent was attained by variety GC-1 (82.91%) and the treatment 20oC (88.83%) with their corresponding interaction (94%). Also the maximum root length recorded in GC-1 (4.22 cm) and treatment 200C (4.45cm) with the highest interaction (5.13 cm). Similarly highest shoot length was noted in GC-1 (3.40 cm) and temperature treatment 200C (3.68 cm) with their significant interaction (4.20 cm). The highest seedling length GC-1 (7.59 cm) and 200C (8.13 cm) the temperature treatment recorded with their corresponding interaction (9.33 cm). Significantly higher seedling fresh weight was noted in GC-1 (140.16 mg) and temperature treatment, 200C (161.66 mg) with highest interaction (219.66 mg). Maximum seedling dry weight was in variety GC-1 (10.00 mg) and temperature treatment 200C (10.38 mg) with their interaction (10.76 mg). The highest seedling vigour
………...………………….…………………………………………………...Abstract
iv
index I was recorded in in GC-1 (640) and temperature treatment 200C (728) with their corresponding highest interaction (877) and maximum seedling vigour index II was recorded in variety GC-1(75) and treatment (83) 200C with highest interaction (93).
The different days of ageing also showed significant effect on the seed viability and longevity. They recorded the reduction percentage after the five days of ageing for different characters. The minimum reduction of germination percent was noted in variety GC-1 (35.08 %). Also the minimum reduction percentage in root length was observed in variety GC-1 (46.5 %). While minimum reduction percentage in shoot length was observed in variety GC-4 (48 %). Similarly lowest reduction percent in seedling length was in variety GC-1 (50 %). The minimum reduction percentage in seedling fresh weight was observed in variety GC-1 (24.43 mg). Also the minimum reduction percentage in seedling dry weight was GC-1 recorded (27.92 %). Seedling vigour index I also recorded minimum reduction percent GC-1 (67.74 %). The minimum reduction percent in seedling vigour index II GC-1 (53.24 %). Significantly the minimum reduction percent in electrical conductivity was recorded GC-1 (43.82 %).
Description
Keywords
agriculture, seed science & technology