STUDIES ON THE EFFECT OF ACCELERATED AGEING ON GERMINATION, VIGOUR AND YIELD OF SUNFLOWER ( Helianthus annuus L.)
KrishiKosh
View Archive InfoField | Value | |
Title |
STUDIES ON THE EFFECT OF ACCELERATED AGEING ON GERMINATION, VIGOUR AND YIELD OF SUNFLOWER ( Helianthus annuus L.)
|
|
Creator |
RAVINDAR, VANGA
|
|
Contributor |
MURALIMOHAN REDDY, B
|
|
Subject |
STUDIES, EFFECT, ACCELERATED, AGEING, GERMINATION, VIGOUR, YIELD, SUNFLOWER,
|
|
Description |
The effect of accelerated ageing on germination, vigour and yield of sunflower (Helianthus annuus L.) was studied in both laboratory and field. Laboratory studies were conducted at Seed Technology Research Project, Raj endranag ar, Hyderabad, while field studies were conducted at College Farm, College of Agriculture, Raj endranagar, Hyderabad, on a clay loam soi 1 during rabi, 1988-89. The experiment was laid out in randomized block design (factori a 1) replicated thrice w"ith four varieties (MSFH-1 ,MSFH-6,MSFH-8 and MSFH-17) and five treatments (A1M1 =seed with 15+0.4% moisture and stored at 20 °C for 7 days, A2M1 =seed with 15+0.4% moisture and 0 0 stored at 20 C for 14 days; A1M2 =seed stored at 40+1 C temperature and 85+2% relative humidity for 7 days; = seed stored at 40+1°C temperature and 85+2% relative humidity for 14 days and control).There was a reduction in germination per cent by both the methods of accelerated ageing in all the cultivars. Seed stored with high moisture and at low temperature had lesser effect on germination per cent than seeds stored at high temperature and high relative humidity. increase in duration of the treatment resulted greater effect of the treatment.Among cultivars more reduction in germination was noticed in MSFH-6 and MSFH-8 than MSFH-1 and MSFH-17. Complete loss of germinability resulted in MSFH-8 when seeds stored at high temperature (40~1°C) and high relative humidity (85+2%) for 14 days.Reduction in germination was associated with increase in abnorm-al seedlings. The reduced germination levels resulted in reduced seedling vigour, decline in rate of emergence, plant height, number of l ~ eaves and leaf area per plant, delayed flowering and maturity, reduction in head diameter, filled seed per head, 100 seed weight and per plot yield. This reduction was noticed in all cult i vars but MSFH-6 and MSFH-8 were more affected, by very low germination levels obtained by accelerated ageing, than MSFH-1 and MSFH-17.The per cent decline in yield from control to accelerated ageing treatments (low germination levels) was minimum in ~M 1 (13.06), intermediate in both A1M2 and A 2 M1 (23.13) and maximum in ~M2 was (43.06) and the germination levels were closely correlated to yield in all the cultivars studied. |
|
Date |
2016-08-16T14:52:22Z
2016-08-16T14:52:22Z 1990 |
|
Type |
Thesis
|
|
Identifier |
http://krishikosh.egranth.ac.in/handle/1/72623
|
|
Language |
en
|
|
Relation |
D3344;
|
|
Format |
application/pdf
|
|
Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD.
|
|