Phytostructure of diverse growth forms in an alpine ecosystem of north-west Himalaya, India

Vashistha, Rajiv K.; Rawat, Neelam; Chaturvedi, Ashish; Nautiyal, B. P.; Prasad, P.; Nautiyal, M. C.

doi:10.1080/11263504.2011.584915

Cited by 5 publications

(2 citation statements)

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“…A number of studies on phenology of different plant species from different parts of India have also been undertaken which include those from a subtropical humid forest in North-Eastern India [19,20], Kumaun Himalayan forests [21,22], deciduous forest of Bandipur in peninsular India [23], Shervaroys, Southern India [24], tropical moist forest of Western Ghats in Karnataka [25], Hathinala Forest in Uttar Pradesh [26], alpine expanse of North-West Himalaya [27], Orissa coast [28], tropical montane forests in the Nilgiris [8], Kolhapur region (Maharashtra) [29], and Katerniaghat wildlife sanctuary situated in the Himalayan Terai region in Uttar Pradesh [30], Northeastern India [31]. However, no such information is available on plants of Punjab plains, hence we initiated phenological studies in trees and shrubs of this region of India.…”

Section: Introductionmentioning

confidence: 99%

Phenology of Some Phanerogams (Trees and Shrubs) of Northwestern Punjab, India

2013

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Plants perform various vegetative and reproductive functions throughout the year in order to persist in their habitats. The study of these events including their timing and how the environment influences the timing of these events is known as phenology. This study of the timing of seasonal biological activities of plants is very important to know about plant’s survival and its reproductive success. The variation in the phenological activities is due to change in different abiotic conditions. This paper deals with the study of phenological activities like bud formation, flowering time, fruiting time, and seed formation for some leguminous plants of Amritsar, Punjab (a state in the northwest of India) for three consecutive years from 2009 till 2011.

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Section: Introductionmentioning

confidence: 99%

Phenology of Some Phanerogams (Trees and Shrubs) of Northwestern Punjab, India

2013

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“…Photosynthesis is the most important physiological process of plants, and one of the criterions in evaluating plant primary productivity (Rascher & Pieruschka 2008;McMinn et al 2010;Encina et al 2012;Rahman et al 2012;Redha et al 2012;Vashistha et al 2012). The plant photosynthesis is closely related to its existent ecological environment, and the research on plant photosynthetic characteristics is one of the effective ways to reveal the ecological adaptability of different plants to its existent environment.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic and water use characteristics in three natural secondary shrubs on Shell Islands, Shandong, China

Xia

Zhang

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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Ziziphus jujuba var. spinosa Hu, Periploca sepium Bunge, and Securinega suffruticosa (Pall.) Rehd are mainly natural secondary shrubs on Shell Islands of the Yellow River Delta. The physiological characteristics of leaves of the 3-year-old shrub species, including photosynthesis, apparent quantum yield (AQY), dark respiration rate (R D ), light compensation point (LCP), light saturation point (LSP), transpiration rate (E), and water use efficiency (WUE) and so on, were studied by using a Li-Cor6400 portable photosynthesis system. The results showed that the modified rectangular hyperbola model could simulate the photosynthesis -light response curves better, with a compound correlation coefficient (R 2 ) greater than 0.996. There were significant differences in the photosynthetic capacity, AQY, R D , LCP, LSP, E, and WUE among the three shrub species. The three shrub species displayed different photosynthetic ability in the same environment; the photosynthetic capacity of Z. jujuba was 1.49 times that of S. suffruticosa. Z. jujuba had the highest ability to use low light, and its AQY was 0.058, and that of other two species was among ordinary species. The consumption of photosynthetic products of S. suffruticosa was highest and it had the most active physiological metabolism. Z. jujuba had higher shade tolerance, while these three species were photophilous. The sequence of water-consuming ability by transpiration was in the order of Z. jujuba . P. sepium . S. suffruticosa. The water-consuming ability of P. sepium and S. suffruticosa did not show significant correlation with meteorological factors. P. sepium had the highest WUE, followed by Z. jujuba, and S. suffruticosa had the least. The net photosynthetic rate ( P n ) and WUE had evident threshold responses to the variations of soil moisture to maintain high efficient water use. The relative moisture content (W r ) of Z. jujuba, P. sepium, and S. suffruticosa was within the range of 36. 18-68.89%, 42.31 -81.76%, and 46.87 -91.62%, respectively, in which three natural secondary shrubs had higher levels of P n and WUE. In summary, P. sepium had higher development potential, and Z. jujuba had physiological characteristics of higher photosynthetic ability, transpiration, and WUE, and is the most suitable shrub species for afforestation.

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