INFLUENCE OF PRE–SOAKING CHEMICALS ON GERMINATION AND SUBSEQUENT SEEDLING GROWTH OF PAPAYA (Carica papaya L.) cv. RED LADY UNDER NET HOUSE CONDITION
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Date
2020
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Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.)
Abstract
The present investigation entitled “Influence of pre-soaking chemicals on germination and subsequent seedling growth of papaya (Carica papaya L.) cv. Red Lady under net house condition” was carried out during the year 2019-20 at Centre of Excellence on Protected Cultivation and Precision Farming, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh employing Completely Randomized Design having nine treatments replicated three times. The treatments consisted nine different pre-soaking chemicals viz. T0: Control (water), T1: Gibberellic Acid @ 100 ppm, T2: Gibberellic Acid @ 200 ppm, T3: Potassium Nitrate @ 0.5%, T4: Potassium Nitrate @ 1%, T5: Benzyladenine @ 50 ppm, T6: Benzyladenine @ 100 ppm, T7: Thiourea @ 1000 ppm, T8: Thiourea @ 2000 ppm.
The experiment was performed on papaya crop cv. Red Lady with different pre-soaking chemicals on papaya seed under net house condition.
Pre-soaking of papaya seeds with GA3 @ 200 ppm had significant effect on seed germination and took minimum number of days for germination (15.13 days). Rate of seedling emergence (80.66%), germination percentage (82.32%) and germination index (2.29) was also recorded maximum under the same treatment as compared to all other treatments under the present investigation.
The height of papaya sapling (60.47 cm), number of leaves per plant (9.05), length of shoots (12.47 cm) and seedling vigour index-I (1425.40) was significantly influenced and recorded maximum under the treatment T7 (Thiourea @ 1000 ppm) as compared to rest of the treatment under the present trial.
Pre-soaking of papaya seeds with GA3 @ 200 ppm had significant effect on different growth parameters and recorded maximum stem girth (5.72 mm), fresh weight of shoot (12.99 g), dry weight of shoot (2.03 g), primary roots per plant (8.82), secondary roots per plant (76.35), fresh weight of root (3.62 g), dry weight of roots (0.38 g), fresh weight of sapling (16.38 g), dry weight of sapling (2.45 g), root: shoot ratio on dry weight (0.26 g) and seedling vigour index-II (202.23) as compared to all other treatments, while minimum was recorded under control.
Description
INFLUENCE OF PRE–SOAKING CHEMICALS ON GERMINATION AND SUBSEQUENT SEEDLING GROWTH OF PAPAYA (Carica papaya L.) cv. RED LADY UNDER NET HOUSE CONDITION