Informatics Publishing Limited

Ashok Kumar , A. K. Matharoo

Abstract

A Seed Production Area (SPA) of Pinus kesiya was established in the State of Manipur. Detailed description of the methodology, and the gain achieved after culling of the inferior trees are presented. The population retained in the SPA improved by 32.05,20.80,14.66 and 24.15 per cent, respectively, for average index value, height, clear bole height and girth and breast height.

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Ashok Kumar , K. G. Prasad , A. K. Matharoo

Abstract

Many forest research organisations have developed high yielding genotypes with concerted research efforts both in the laboratory and field. However, these genotypes have not been tested in field or field oriented conditions. Various tools have been suggested for testing, registering and releasing of genetically improved planting stock in the present article. There should be clone and progeny releasing committees viz. Regional Clone and Progeny Releasing Committee (RCPRC) and National Clone and Progeny Releasing Committee (NCPRC). The RCPRC would have a chairman and five members, whereas NCPRC would have a chairperson and a minimum of eight members. The RCPRC would be headed by a chairperson and will have a minimum of two breeders/geneticists of the regional Institute. Other members would be the nominees of the State Forest Departments, Forest Development Corporations and wood based industries working on tree improvement. The chairperson, NCPRC would be appointed by the DDG (Research), ICFRE, and chairpersons ofRCPRCs would be the members ofNCPRC. Once the superiority of the planting stock is tested, elite entries would be registered and released by the registration committee for commercial multiplication.

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Ashok Kumar , A. K. Matharoo , Sudhir Singh , A. N. Singh

Abstract

The planting stock of Gmelina arborea was improved through 'Technology Mission - Gmelina arborea'. The mission incorporated various techniques of genetics, breeding, clonal propagation, nursery, physiology, phenology, entomology and pathology. A total of 119 plus tree selected from 10 geographical locations were selected and multiplied through clonal means, and established in the vegetative multiplication gardens cum germplasm banks. The passports for plus tree was developed that provided information on different aspects including species, accession, geography, silviculture and technical information. The vegetative propagation protocols both for adult and juvenile materials were standardized using budding, grafting and ischolar_maining of branch cuttings. The clonal and progeny trials were carried out to test the stability, adaptability and growth performance of selected germplasm. The seedling and clonal seed orchards were established in the states of Assam, Manipur and Tripura to meet immediate supply of the improved seed. Various clones were screened for resistance against Craspedonta leayana which is a serious defoliator of G. arborea. Eight per cent of the clones exhibited higher resistance while 26 per cent of the clones showed moderate resistance. The seed treatment with fungicide Captaf was found to be most effective in managing seed and seedling fungal pathogens

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