Selection of different candidate plus trees of Red Cedar ( Toonaciliata ) and their nursery evaluation in Jammu subtropics
Loading...
Date
2023-04
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation entitled “Selection of different candidate plus trees of Red cedar (Toona ciliata) and their nursery evaluation in Jammu subtropics”was carried out in the Division of Silviculture & Agroforestry, Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu (J&K) with the objectives to select the Candidate Plus Trees (CPTs) from their natural range of occurrence and screen them on the basis of their field and nursery performance so as to identify superior trees as mother plants for future plantations. Twenty two phenotypically superior candidate plus trees were selected from twenty two different locations across six districts of Jammu and Kashmir (UT) viz. Kathua, Samba, Jammu, Udhampur, Reasi and Rajouri following the baseline method. Tree height, clear bole height, DBH, crown diameter, number of branches and straightness score, ranged between 11.63- 26.13m, 2.18-8.19m, 27.36-43.56cm, 7.34-12.45m, 10-27 and 3-5, respectively among marked CPTs. CPT-4, CPT-5, CPT-6, CPT-14, CPT-16, CPT-17, CPT-18, CPT-19, CPT-20 and CPT-22 exhibited higher values for tree characteristics. Seeds were collected from each plus tree and progenies were raised and evaluated for growth, biomass and seedling quality traits under nursery conditions. Considerable variations were observed in fruit length (16.91-25.59mm), fruit breadth (8.32-11.64mm), fruit weight (158.03-364.93g), seeds per fruit (19.45-28.22), seed length with wings (12.80-20.89mm), seed length without wings (4.98-6.51mm), seed width with wings (3.41-5.29mm), seed width without wings (2.15-3.21mm) and seed weight (0.15-0.36g). Significant variation was also observed among progenies for germination percentage (25.54-96.67%), survival percentage (59.08-87.23%), seedling height (35.22-49.69 cm), collar diameter (6.05-9.94mm), number of leaves (51.29-77.08), number of branches (6.47-10.53), primary root length (17.50-31.98cm), fresh shoot weight (11.74-21.59g), dry shoot weight (4.28-7.66g), fresh root weight (6.21-11.65g), dry root weight (2.06-4.54g), total fresh biomass (18.88-33.24g), total dry biomass (6.83-11.61g), seedling quality index (1.02-1.96), sturdiness quotient (4.74-6.57) and root: shoot ratio (0.38-0.74). CPT-1, CPT-2, CPT-3, CPT-11, CPT-14, CPT-15, CPT-16 and CPT-18were outstanding in respect to most of the tree growth characteristics, seedling growth and seedling quality traits which can be used as the genetic stock for the production of quality planting material for afforestation programmes and further improvement in the species.
Description
Keywords
Citation
Preferred for your work. Javaid. M., 2023.Selection of different candidate plus trees of Red Cedar (Toona ciliata) and their nursery evaluation in Jammu subtropics.