Effect of seed priming on germination and seedling growth of acid lime (Citrus aurantifolia Swingle) cv. Kagzi
Loading...
Date
2021-07
Authors
Gurmeet
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU, Hisar
Abstract
The present experiment was carried out with the objective of studying the seed priming effect on germination and seedling growth of acid lime cv. Kagzi at CCS Haryana Agricultural University, Hisar during the year 2020-2021. The experiments consisted of seventeen chemical treatments viz. SA (50, 100 & 150 ppm), ZnSO4 (0.1, 0.2 & 0.3%), thiourea (1.0, 1.5 & 2.0%), KNO3 (1.0, 2.0 & 3.0%) & KH2PO4 (1.0, 2.0 & 3.0%), water dip & control (without soaking) and six organic treatments beejamrit, cowurine (50% & 100%), cowdung, cowdung slurry and control (without soaking). The experiment was laid out in completely randomized design with three replications. The results of study revealed that acid lime seeds treated with SA 150 ppm gave the highest germination percentage (74), germination rate (3.82), no. of seedling emerged per seed (1.83), early emergence of first seed (15 days) & fifty percent (21 days) seed germination, followed by ZnSO4 0.3%. Maximum seedling growth viz. seedling diameter (5.12 mm), seedling height (47.97 cm), length (46.42 cm) & diameter of tap root (4.94 mm), no. of secondary (75.67) & fibrous roots (814.67), fresh (4.42 g) & dry weight of root (2.12 g) was observed in thiourea 2% followed by SA 150 ppm, KNO3 3%, ZnSO4 0.3% at 180 days after sowing. Maximum no. of leaves per seedling (48.67), leaf area (9.98 cm2), leaf chlorophyll (37.42 SPAD) & nitrogen content was observed in KNO3 3%, followed by SA 150 ppm, thiourea 2%, ZnSO4 0.3% The highest shoot to root ratio (2.84) was measured in KNO3 1%. Overall, SA 150 ppm & ZnSO4 0.3% advanced and increased the germination percentage, whereas thiourea 2%, KNO3 3%, SA 150 ppm & ZnSO4 0.3% improved the seedling growth parameters in kagzi lime cv. Kagzi.
Various organic formulation treatments delayed & decreased the germination percentage over control. However, beejamrit and cowdung slurry significantly effective in increasing the shoot & root growth parameters over control & cowurine 50%, cowurine 100% and cowdung.