Impact of grafting time and environment on multiplication of guava (Psidium guajava L.) by wedge grafting
| dc.contributor.advisor | Singh, V.P. | |
| dc.contributor.author | Joshi, Kamal Kishor | |
| dc.date.accessioned | 2018-04-23T05:21:27Z | |
| dc.date.available | 2018-04-23T05:21:27Z | |
| dc.date.issued | 2016-07 | |
| dc.description.abstract | The present investigation entitled “Impact of grafting time and environment on multiplication of guava (Psidium guajava L.) by wedge grafting” was carried out at Horticulture Research Centre Patharchatta during the year 2015-16. The experiment was laid out in factorial randomized block design with three replications. The experiment consisted of (i) two environmental conditions viz. polyhouse and open field, (ii) two covering conditions viz. polyethylene cap and without covering and (iii) 12 grafting months ( January 2015 to December 2015)in which grafting performed at 15th date of every month. Most of the parameters showed significant variations due to the effect of these three factors. In respect of environmental conditions, minimum time taken to bud sprout (12.26 days) and 1st leaf opening of grafts (14.87 days) with maximum success (77.39%), survivability (70.94%), shoot diameter (4.56 mm), shoot length (24.08 cm), number of leaves/grafts (13.83), leaf area (39.54 cm2), canopy spread (138.88 cm2), chlorophyll a content (0.145 mg/g) and chlorophyll b content (0.065 mg/g) of grafts leaves, fresh (16.05) and dry (7.38g) weight of shoots and fresh (9.18g) and dry (3.97g) weight of roots of grafted plants at 120 days were recorded under polyhouse conditions. Regarding covering conditions, covering with polyethylene cap took minimum days to bud sprout (12.91 days) and 1st leaf open of grafts (16.32 days) with highest success (75.75%), survivability (68.45%), shoot diameter (4.40 mm), shoot length (21.22 cm), number of leaves (12.76), leaf area at 120 days (37.36 cm2), canopy spread at 120 days (122.19 cm2), chlorophyll a content (0.135 mg/g) of grafts leaves at 120 days, fresh (14.04g) and dry (6.51g) weight of shoots whereas, maximum chlorophyll b content (0.060 mg/g) at 120 days was recorded in uncovered grafts. In respect of grafting months, minimum days taken to spouting of grafts (12.03days) and 1st leaf opening of grafts (14.89) with maximum shoot diameter (4.75mm) shoot length (24.35 cm), leaf area (39.55 cm2 ) and canopy spread (149.56 cm2) and chlorophyll a content (0.142 mg/g) of grafs leaves at 120 days were recorded by July grafted plants. The maximum success (93.37%) and survivability (69.75) at 120 days of grafts were recorded when the grafting was performed in the month of March. The combined effect of the above three factors had also showed significant influence on most of the parameters studied. The lowest time to bud sprout (10.35 days) and 1st leaf opening (12.50 days) with maximum shoot length (26.3cm) were recorded in the month of July grafted plants under polyhouse conditions with polyethylene cap covering conditions, whereas, maximum success was recorded in the association of February grafting under polyhouse conditions with polyethylene cap covering conditions (95.3%). Hence from above results it can be concluded that grafting performed under polyhouse with polyethylene cap covering was found superior to obtained maximum success, survivability and growth of grafts. For obtaining higher success and survivability of grafts, October to March was found to be the suitable period for conducting grafting under polyhouse conditions, whereas, February to March was found to be the best period for conducting grafting in open field conditions. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810044319 | |
| dc.keywords | grafting, environmental factors, propagation, guavas, Psidium guajava | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 153 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Guavas | en_US |
| dc.sub | Horticulture | en_US |
| dc.subject | null | en_US |
| dc.theme | Grafting | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Impact of grafting time and environment on multiplication of guava (Psidium guajava L.) by wedge grafting | en_US |
| dc.type | Thesis | en_US |