Thumbnail Image

Theses

Browse

20181
Reset filters
Author: Ashok Kumar × End date: 2018 × Start date: 2010 × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of rootstock thickness on wedge grafting in guava (Psidium guajava L.) under different growing conditions
    (CCSHAU, 2018) Ashok Kumar; Chahal, Devender
    The present investigation entitled “Effect of rootstock thickness on wedge grafting in guava (Psidium guajava L.) under different growing conditions” was conducted during 2017 at Centre for Quality Planting Material, RDS Seed Farm CCSHAU, Hisar, Haryana. The experiment comprised of 18 treatments i.e. three rootstock thickness (<0.8cm, 0.8-1.2cm and >1.2cm) and six growing conditions (polyhouse with polycap, polyhouse without polycap, shade net with polycap, shade net without polycap, open field condition with polycap and open field condition without polycap) with three replication. The results revealed that scion grafted on rootstock with thickness of 0.8-1.2cm took minimum days for bud sprouting and number of days for first leaf opening. Success percentage of grafts was also recorded maximum with rootstock thickness of 0.8-1.2cm. Shoot length and its diameter at 60, 90 and 120 days of grafting were registered maximum with rootstock thickness of >1.2cm and closely followed by rootstock thickness of 0.8-1.2cm. Number of leaves and leaf area per plant were also observed maximum with rootstock thickness of >1.2cm and closely followed by rootstock thickness of 0.8-1.2cm. Similarly, leaf chlorophyll content was observed maximum with rootstock thickness of >1.2cm and closely followed by rootstock thickness of 0.8-1.2cm. The maximum fresh and dry weight of shoot, fresh and dry weight of root were observed with rootstock thickness of >1.2cm. Most of the growth traits were observed significantly superior under polyhouse and shade net as comparison to open field condition. Grafts covered with polycap performed better than uncovered grafts under all the growing conditions. Days for graft sprouting and first leaf opening were recorded minimum under polyhouse with polycap. Maximum success percentage of grafts, shoot length and its diameter, number of leaves, leaf area per plant, fresh and dry weight of shoot and root were observed maximum under polyhouse with polycap, followed by shade net. Almost similar leaf chlorophyll contents (chlorophyll a, chlorophyll b and total chlorophyll) were recorded under polyhouse and open field condition with and without polycap. Overall grafts with rootstock thickness 0.8-1.2 cm and grown under polyhouse with polycap performed comparatively better.