EFFECT OF NANOPARTICLES SEED PRIMING AND FOLIAR SPRAY ON GROWTH, SEED YIELD AND QUALITY ATTRIBUTES IN OKRA [ABELMOSCHUS ESCULENTUS (L.) MOENCH]

Simple item page
dc.contributor.advisorAshok Thakur
dc.contributor.authorAKSHAY KUMAR WALIA
dc.date.accessioned2024-06-21T16:19:35Z
dc.date.available2024-06-21T16:19:35Z
dc.date.issued2024-04-24
dc.description.abstractThe present investigations entitled, “Effect of nanoparticles seed priming and foliar spray on growth, seed yield and quality attributes in okra [Abelmoschus esculentus (L.) Moench]” were carried out at Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2022 to 2023. The first experiment was laid out in Completely Randomized Design (CRD) in laboratory having 74 treatment combinations of four nanoparticles (zinc, magnesium, iron and boron) and their bulk counterparts (at 50, 100 and 150 ppm concentrations and for 18, 24 and 30 hours) with hydropriming for 24 hours and a control. Experimental results showed that the maximum values for seed quality parameters were observed when seed priming was done with ZnO NPs @ 150 ppm for 18 h with maximum germination (93.75%), shoot length, (20.55 cm), root length (12.90 cm), seedling length (32.37 cm), seedling dry weight (261.00 mg), seedling vigor index - I (3033.75), seedling vigor index – II (24.46) and germination after accelerated ageing (86.75 %). In the second experiment, the best performing treatments were compared with hydropriming and control, highest physiological quality was also recorded when priming was done with ZnO NPs @ 150 ppm for 18 h with maximum dehydrogenase activity (0.449), α-amylase activity (11.25 mm), mobilization efficiency (175.37 %), shoot length (13.98 cm), root length (9.30 cm), seedling fresh weight (698.73 mg), seedling dry weight (354.91 mg) and leaf area (7.39 cm2). The third experiment was carried out in the experimental field in randomized block design with 17 treatment and a control. Among the treatment under study, seed priming with ZnO NPs @ 150 ppm for 18 h along with ZnO NPs spray @ 150 ppm at flowering initiation and 50 % flowering was the best performing treatment with maximum values for growth, seed yield and quality parameters with highest emergence percentage (87.50 %), plant height at first and second spray (40.12 cm and 57.18 cm), number of primary branches per plant (8.10), Number of fruits per plant (15.51), fruit length (19.20 cm), number of pods per plant (14.13), seeds per pod (48.52), seed yield (29.64 g/plant, 0.65 kg/plot, 17.97 q/ha) and minimum number of days to pod harvest (96.53 DAS). Moreover, this treatment also recorded maximum values for seed quality of harvested seed viz., seed index (5.03 g), germination (92.62 %), seedling length (31.66 cm), seedling dry weight (256.63 mg), seedling vigor index - I (2932.44), seedling vigor index - II (23.77), germination after accelerated ageing (83.88 %) and minimum electrical conductivity (0.079 dSm-1). The maximum benefit cost ratio was also observed in the same treatment with a ratio of 2.94:1. Hence, it may be inferred from the outcomes of the investigation that seed priming with ZnO NPs @ 150 ppm for 18 h along with ZnO NPs spray @ 150 ppm at flowering initiation and 50 % flowering is an appropriate treatment combination for promoting the growth, seed yield as well as quality attributes in Okra.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810210747
dc.keywordsSEED YIELD AND QUALITY ATTRIBUTES IN OKRA [ABELMOSCHUS ESCULENTUS (L.) MOENCH]
dc.keywordsEFFECT OF NANOPARTICLES SEED PRIMING AND FOLIAR SPRAY ON GROWTH
dc.language.isoEnglish
dc.pages106+viii
dc.publisherUHF Nauni
dc.subSeed Science and Technology
dc.theme“Effect of nanoparticles seed priming and foliar spray on growth, seed yield and quality attributes in okra [Abelmoschus esculentus (L.) Moench]
dc.these.typePh.D
dc.titleEFFECT OF NANOPARTICLES SEED PRIMING AND FOLIAR SPRAY ON GROWTH, SEED YIELD AND QUALITY ATTRIBUTES IN OKRA [ABELMOSCHUS ESCULENTUS (L.) MOENCH]
dc.typeThesis
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Akshay Kumar Walia (H-2020-71-D) Ph.D Thesis.pdf
Size:
4.34 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses