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- 저자 : Nath Vishal (검색결과 2 건)
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Sanath Krishna Muliya,Anukul Nath,Gandla Chethan Kumar,Avinash Visvanathan,Melvin Selvan,Raghuram Gowda,Vishal Santra,Abhijit Das 국립중앙과학관 2021 Journal of Asia-Pacific Biodiversity Vol.14 No.2
Delineating species distribution comprising information on habitat suitability is vital for developingconservation strategies. Like many other snake species, Lycodon flavicollis is a poorly studied peninsularIndian endemic species known only from few locality records. We used MaxEnt following the smallsampling approach to determine the probable distribution of the species. We found that the majority ofthe predicted area falls under Deccan Peninsular (Central Plateau and Deccan South) region of Indiafollowed by parts of Western Ghats. Isothermality and mean temperature of wettest quarter hadconsiderable influence on the predicted distribution range of the species. The findings of the presentwork show that our modelling approach may help in identifying new areas where this species may occur. We discussed the usefulness of this approach in determining potential distribution of data deficientspecies such as L. flavicollis. Additionally, we have also provided significant information on morphologyand natural history to enrich our current knowledge on the species.
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Kishore Kundan,Singh H. S.,Nath Vishal,Baig M. J.,Murthy D. Sreenivasa,Acharya G. C.,Behera Suchitra 한국원예학회 2023 Horticulture, Environment, and Biotechnology Vol.64 No.4
Canopy architecture is one of the most critical components infl uencing photoassimilation, yield and quality of fruit crops; thus, it is logical to optimize suitable canopy form with high light interception effi ciency. In this study, the eff ectiveness of three forms of canopy architecture viz., open centre, Y trellis and espalier were assessed, under high density planting system of mango (833 plants ha − 1 ). Y trellis facilitated better availability of photosynthetic photon fl ux density (PPFD) in upper (793 μmol m − 2 s − 1 ) and lower canopy layers (487 μmol m − 2 s − 1 ) by exhibiting moderate interception of photosynthetic active radiation (PAR). Y-trellis also manifested relatively higher photosynthetic activity (6.07 μmol CO 2 m − 2 s − 1 and 5.24 μmol CO 2 m − 2 s − 1 ), stomatal conductance (0.194 μmol H 2 O m − 2 s − 1 and 0.172 μmol H 2 O m − 2 s − 1 ), carbohydrate and protein content in upper and lower canopy layers. On the other hand, espalier system demonstrated high rate of PAR interception and low photosynthetic activity. Mango canopy with Y-trellis and open centre forms provided better results in terms of fl owering intensity and fruit yield. Fruits from Y-trellis exhibited relatively better colour attributes, sucrose and β-carotene content. Alternatively, soluble solid contents, citric acid, carbohydrate and protein content were unaff ected with the training systems. It was evident from PCA biplots that Y-trellis had close proximity with light intensity, photosynthetic characteristics, fl owering intensity, yield, and fruit quality attributes. Moreover, path coeffi cient analysis indicated that PPFD, iPAR and photosynthetic rate ( Pn ) were the most important predictors for determining fl owering in mango. The fi ndings of the present study demonstrate that optimized canopy architecture is instrumental for eff ective utilization of radiation energy for higher fl owering intensity, yield and fruit quality in mango. Economic assessment of training system indicated that Y-trellis was more feasible system when cultivation was aimed to maximise the profi t with no restriction on investment. However under capital constraint situation open centre system was more profi table.
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