R. K. Sahu , V. K. Agarwal

Abstract

A total of fourteen fungi have been detected by blotter and agar plate methods from the surface sterilized seeds of Lead tree (Leucaena leucocephala). These fungi were Alternaria alternata , A. tenuissima , Apispora montagnei , Arthrinium euphorbiae , Aspergillus flavus , A fumigatus , A. niger , Curvularia clavata , C. lunata , Fusarium sp. , F. pallidoroseum (syn. F. semitectum) , Paecilomyces variotii , Penicillium chrysogenum and Phoma sp. All fungi , except A. flavus , A. fumigatus , A. niger , C. lunata and Phoma sp. constitute new host records. Whereas , all except A. niger and F. pallidoroseum , have been reported for the first time from India , hence constitute new records on this host from India as well. Agar plate method was found superior over blotter method for the detection of seed borne fungi.

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R. K. Sahu , V. K. Agarwal

Abstract

The fungi namely Aspergillus flavus, A. fumigatus, A. niger, Curvularia lunata, Fusarium equiseti, F. longipes, F. pallidoroseum, Fusarium sp., Paecilomyces variotii, Penicillium pinophilum, Rhizoctonia solani and Rhizopus stolonifer were recorded from the seed coat, endosperm and embryo of normal and discoloured seeds of Horse bean (Parkinsonia aculeata), whereas Apispora montagnei, Aspergillus aculeatus, A. flavus, A. fumigatus, A. niger, Curvularia clavata, C. lunata, Fusarium equiseti, F. pallidoroseum, F., moniliforme, Fusarium spp.,Rhizoctonia solani and Rhizopus stolonifer were found associated with the seed coat, endosperm and embryo of the normal and discoloured seeds oflead tree (Leucaena leucocephala). On the other hand, Aspergillus flavus, A. fumigatus, A. niger, A. ustus, Aspergillus sp., Curvularia lunata, Fusarium compactum, F. longipes, F. pallidoroseum, Fusarium sp. and Penicillium aurantiogriseum were detected in the seed coat, endosperm and embryo of the normal and discoloured seeds of rusty shield bearer (Peltophorum ferrugineum). In general, the percent incidence of fungi recovered from the discoloured seeds was greater in comparison to the normal seeds.

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Ajai Kumar Singh ¹, R. K. Sahu ¹, Ayush Kumar Singh ¹, S. N. Dubey ¹

Affiliations
1 Department of Botany, Udai Pratap Autonomous College, Varanasi-221 002, India

Abstract

No abstract

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Ajai Kumar Singh ¹, R. K. Sahu ¹, Suman Singh ¹

Affiliations
1 Department of Botany, Udai Pratap College (autonomous), Uttar Pradesh, Varanasi-221002, IN

Abstract

Seedling morphology of Adrographis paniculata (Burm. F.) Wall. Ex Nees has been studied to highlight their morphotaxonomic attributes. Seedling germination was Macaranga type. Paracotyledons were opposite, isocotylar, th foliaceous, exstipulate, petiolate and persistent up to 4^th leaf stage. Paracotyledon blade was orbicular, base rounded, apex shallowly emarginate, margins entire, both surfaces green and hairy, venation campylodromous. First leaves were opposite, simple, exstipulate and petiolate. Leaf petiole was green and pubescent but glabrous on abaxial surface, quadrangular and winged. Leaf shape was ovate, base rounded and attenuate, apex obtuse, entire margins and venation craspedodromous. Second and subsequent leaves same as that of first leaves except size. Axillary buds appear at 3^rd or 4^th leaf stage.

Keywords

King of Bitters, Morphology, Seedling, Taxonomy.

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B. Gupta ¹, R. K. Sahu ¹

Affiliations
1 Department of Silviculture and Agroforestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, H.P.-173 230, IN

Abstract

In the present study a quick method termed as 'Height Intercept Method' is used to determine site quality of any chir pine forests/stands. The study was conducted in Solan district of Himachal Pradesh (India) selecting eight chir pine sites viz., Oachghat, Sultanpur, Barog, Shilli, Bauhli, Kandaghat, Subathu and Dharampur) Height and Height Intercepts i.e. 3, 4, 5, 6 and 7^th year mean internodal length for 19 years old trees were measured from breast height. Relationships between mean internodal lengths (height intercept) and height of trees were developed using linear, curvilinear, log linear and log curvilinear models. The results revealed that 6 years height intercept was reliable estimate to express the relationship between height of tree and height intercept of 19 years old chir pine stands and thereby the site quality. The best relationship between height and height intercept was: Height = 3.0493 + 0.1419 Height Intercept + 0.0007 Height Intercept² . Height intercept varied from 30 to 70 cm. Chir pine in Dharampur site exhibited lowest height intercept thus expressing poor site quality whereas, chir pine in Oachghat was maximum height intercept thereby good site quality. The site quality as estimated by height intercept method were compared with standard site qualities given by Forest Research Institute of India (F.R.I.) for chir pine stands/forests and it was found that good site quality of present study was equivalent to site quality I/II and poor site quality equaled site quality III of F.R.I.

Keywords

Chir Pine, Height Intercept, Internodal Length.

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