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Chauhan, K. C.
- Effect of Different Growth Regulators Formulations on the Rooting Potential of Mulberry (Morus alba Linn.)
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Indian Forester, Vol 135, No 12 (2009), Pagination: 1701-1706Abstract
Effect of growth regulator (IBA) was studied in combination with co-factor, sucrose and fungicide (0.2% p-HBA, 2% sucrose, 5% captan) on ischolar_maining of branch cuttings collected from three years old healthy fast growing plants in early spring season. The IBA concentration ranged from 0.01% to 0.10% plus each containing 0.2% p-HBA, 2% sucrose and 5% captan. The sprouting and ischolar_maining characteristics viz.; per cent ischolar_maining, number of leaves per cutting, sprout length, primary ischolar_main number, primary ischolar_main length, fresh ischolar_main weight and dry ischolar_main weight varied significantly among different treatments. Treatment of cuttings with chemical formulation of 0.02% IBA + 0.2% p-HBA + 2% sucrose + 5% captan maximized ischolar_maining (96.05%), number of leaves per cutting (7.46), primary ischolar_main number (12.56), primary ischolar_main length (7.91 cm), fresh ischolar_main weight (8.62 g) and dry ischolar_main weight (5.64 g). Significant coefficients of correlation were found among different character pairs which were straight forward.Keywords
Growth Regulator, Rooting Potential, Morus alba, Clonal Propagation
- Floral Biology and Stigma Receptivity in Bauhinia variegata Linn.
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Indian Forester, Vol 134, No 2 (2008), Pagination: 233-240Abstract
Bauhinia variegata bore whitish pink flowers on one year old shoot growth during March-April. The duration of flowering ranged from 26-49 days. Mean time taken to flower bud development was found to be between 20.88 to 24.92 days. The maximum anthesis and anther dehiscence was observed between 7:00 to 8:00 am and 7:30 to 8:30 am, respectively. The average size of pollen grains was found 68.97 μm. In-vivo stigma remained receptive with effect from 2 hrs before anthesis to 8 hrs after anthesis (88.89%).Keywords
Floral Biology, Stigma Receptivity, Bauhinia variegata- Nursery Evaluation of Promising Species/Varieties of Leucaena for Fast Growth under Mid-hill Conditions of Himachal Pradesh
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Indian Forester, Vol 130, No 11 (2004), Pagination: 1250-1258Abstract
Forty nine species/varieties of Leucaena were procured from different sources within and outside the country with an objective to screen the best species/varieties under nursery condition for the suitability under mid-hill conditions of Himachal Pradesh. The analysis of variance revealed highly significant differences among different species/varieties for seedling growth and biomass traits. After five months nursery growth T38 (Leucaena esculenta × esculenta , ID-47/87) and T37 (L. esculenta × paniculata , ID-79/92) excelled for growth and biomass traits than others , whereas , T1 (L. pulverulenta × L. leucocephala-K75) depicted the least values for collar diameter , inter nodallengtb , leaf area , ischolar_main fresh and dry weight , T44 (L. multicapitulata , ID-81/87) for seedling height and number of nodes , T4 (L. pulverulenta , ID- 84/87) and T21 (L. diversifolia , ID-45/87) for shoot fresh and dry weight.- Variation and Association Analysis among Growth Traits in Half-sib Progenies of Pinus roxburghii Sarg. Plus Trees
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Indian Forester, Vol 128, No 9 (2002), Pagination: 1009-1020Abstract
To know the genetic worth of the plus trees and association among different traits, one year old half-sib progenies of 48 plus trees were evaluated at Nauni during the year, 2000. Highly significant variation in all the traits was noted except for number of stomata. Studies on genetic coefficient of variation, heritability and genetic advance showed that a large portion of phenotypic variability was genetic and highly heritable for the total chlorophyll content, needle diameter and needle cross-sectional area. High heritability estimates were accompanied with high genetic gain for total chlorophyll content and needle cross-sectional area, suggesting the additive gene control for the inheritance of these traits. Collar diameter showed positive and highly significant correlation with seedling height and needle length.- Effect of Diameter Classes and Harvesting Intervals on Seed Bio-chemicals of Acer oblongum wall
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Indian Forester, Vol 128, No 3 (2002), Pagination: 329-335Abstract
Seeds collected from four different classes (D1=<20.50 cm; D2=20.51-30.50 cm; D3= 30.51- 40.50 cm and D4 =>40.51 cm) at six harvesting dates (Viz; C1 = 30th Dec., C2 = 15th Jan., C3 = 30th Jan., C4 = 15th. Feb., C5 = 1st March and C6 = 15th March) gave significant differences for different bio-chemical constituents viz; total, reducing, non-reducing sugars, total phenols, starch, total amino acids and soluble proteins. The combinations ofD1C6, D2C6, D3C6, and D4C6 registered the highest total and non-reducing sugars in their respective diameter classes. Whereas, harvesting date C3 (30th Jan.) in all diameter classes recorded maximum content of starch, total phenols, soluble proteins and total amino acids. The present study suggested that C3 (30th Jan.) was the best harvesting date irrespective of diameter classes in this species.- Outbreak of Mylabris pustulata Thunb. on Paulownia tomentosa at Nauni in Himachal Pradesh
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