Influence of tree water potential in inducing flowering in Rhododendron arboreum in the central Himalayan region

doi:10.3832/ifor1525-008

Influence of tree water potential in inducing flowering in Rhododendron arboreum in the central Himalayan region

Ashish Tewari , Jitendra Bhatt, Amit Mittal

iForest - Biogeosciences and Forestry, Volume 9, Issue 5, Pages 842-846 (2016)
doi: https://doi.org/10.3832/ifor1525-008
Published: May 06, 2016 - Copyright © 2016 SISEF

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Rise in temperature has been reported as the principal cause of variation in flowering phenology in several tree species around the globe. In this study, we hypothesized that not only temperature but also rainfall periodicity, soil moisture and the related changes of twig water potential (ψ) in winter and early spring are important drivers of bud expansion and flowering in Rhododendron arboreum in central Himalayas. To this purpose, phenological and physiological variables (flowering time, flower bud size and twig water potential) were monitored over two years in a wild population of R. arboreum (Uttarakhand, India) and related with environmental variables (rainfall, soil moisture and temperature). Results showed that a rise in twig ψ to -0.7MPa, one week after moderate winter precipitation resulted in flower bud enlargement. In both years flowering was triggered after twig ψ reached the threshold of -0.5 Mpa, though the starting date differed between years. Floral bud size was correlated positively with twig ψ (r = 0.43, df =162, p < 0.001) and soil moisture (r = 0.61, df = 71, p < 0.001), while temperature did not influence flower bud size, soil moisture and twig ψ. Flower bud size increment was related with increase in twig ψ and soil moisture. Based on our results, we concluded that water availability plays an important role in inducing flowering in R. arboreum.

Keywords

Rhododendron, Global Warming, Flowering, Water Potential, Himalaya

Authors’ address

(1)

Department of Forestry and Environmental Science, Kumaun University, Nainital 263002 (India)

Corresponding author

Ashish Tewari
atewari69@gmail.com

Citation

Tewari A, Bhatt J, Mittal A (2016). Influence of tree water potential in inducing flowering in Rhododendron arboreum in the central Himalayan region. iForest 9: 842-846. - doi: 10.3832/ifor1525-008

Academic Editor

Silvano Fares

Paper history

Received: Dec 11, 2014
Accepted: Dec 07, 2015

First online: May 06, 2016
Publication Date: Oct 13, 2016
Publication Time: 5.03 months

Open Access

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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List of the papers citing this article based on CrossRef Cited-by.

(1)

Aizen MA (2003)
Influences of animal pollination and seed dispersal on winter flowering in a temperate mistletoe. Ecology 84: 2613-2627.
CrossRef | Gscholar

(2)

Bhatt J, Ram J (2005)
Seed characteristics and germination in Quercus leucotrichophora A. Camus along the elevational gradients in the Uttaranchal Himalaya. Bulletin of National School of Ecology 15: 207-213.
Gscholar

(3)

Bhatt J, Ram J (2009)
Ecology and regeneration of Carpinus viminea: a lesser known tree species of the Himalaya. Indian Forester 135: 559-570.
Gscholar

(4)

Borchert R (1994a)
Soil and stem water storage determine phenology and distribution of tropical dry forest trees. Ecology 75: 1437-1449.
CrossRef | Gscholar

(5)

Borchert R (1994b)
Induction of rehydration and bud break by irrigation or rain in deciduous trees of a tropical dry forest in Costa Rica. Trees 8: 198-204.
CrossRef | Gscholar

(6)

Chuine I, Belmonte J, Mignot A (2000)
A modelling analysis of the genetic variation of phenology between tree populations. Journal of Ecology 88: 561-570.
CrossRef | Gscholar

(7)

Curtis JT, McIntosh RP (1950)
The interrelationship of certain analytic and synthetic characters. Ecology 31: 438-455.
Gscholar

(8)

Doi H, Takahashi M, Katano I (2010)
Genetic diversity increases regional variation in phenological dates in response to climate change. Global Change Biology 16: 373-379.
CrossRef | Gscholar

(9)

Fitter AH, Fitter RSR (2002)
Rapid changes in flowering time in British plants. Science 296: 1689-1691.
CrossRef | Gscholar

(10)

Gaira KS, Rawal RS, Rawat B, Bhatt ID (2014)
Impact of climate change on the flowering of Rhododendron arboreum in central Himalaya, India. Current Science 106: 1735-1738.
Gscholar

(11)

Gordo O, Sanz JJ (2005)
Phenology and climate change: a long-term study in a Mediterranean locality. Oecologia 146: 484-495.
CrossRef | Gscholar

(12)

Hughes L (2000)
Biological consequences of Global warming: is the signal already apparent. Trends in Ecology and Evolution 15: 56-61.
CrossRef | Gscholar

(13)

IPCC (2014)
Climate change 2014: impacts, adaptation, and vulnerability. Part A: Global and sectoral aspects. Working Group II contribution to AR 5, Cambridge University Press, Cambridge, UK and New York, USA, pp. 169-1131.
Online | Gscholar

(14)

Kerr R (2004)
Three degree of consequences: new focus. Science 305: 932-934.
CrossRef | Gscholar

(15)

Konate S, Leroux X, Tessier D, Lepage M (1999)
Influence of large termitaria on soil characteristics, soil wter regime and tree leaf shedding pattern in a West African savanna. Plant and Soil 206: 47-60.
CrossRef | Gscholar

(16)

Menzel A, Fabian P (1999)
Growing season extended in Europe. Nature 397: 659.
CrossRef | Gscholar

(17)

Menzel A, Sparks TH, Estrella N, Koch E, Aasa A, Ahas R, Alm-Kübler K, Bissolli P, Braslavska O, Briede A, Chmielewski FM, Crepinsek Z, Curnel Y, Dahl A, Defila C, Donnelly A, Filella Y, Jatczak K, Mage F, Mestre A, Nordli Ø, Peñuelas J, Pirinen P, Remisova V, Scheifinger H, Striz M, Susnik A, Van Vliet AJ, Wielgolaski FE, Zach S, Zust A (2006)
European phenological response to climate change matches the warming pattern. Global Change Biology 12 (10): 1969-1976.
CrossRef | Gscholar

(18)

Negi GCS (2006)
Leaf and bud demography and shoot growth in evergreen and deciduous trees of central Himalaya, India. Trees 20: 416-429.
CrossRef | Gscholar

(19)

Pangtey YPS, Rawal RS, Bankoti NS, Samant SS (1990)
Phenology of high altitude plants of Kumaun in central Himalaya, India. International. Journal of Biometeorology 34: 122-127.
CrossRef | Gscholar

(20)

Parmensan C, Yohe G (2003)
A globally coherent fingerprint of climate change impacts across natural ecosystems. Nature 421: 37-42.
CrossRef | Gscholar

(21)

Poudyal K, Jha PK, Zobel DB, Thapa CB (2004)
Patterns of leaf conductance and water potential of five Himalayan tree species. Tree Physiology 24: 689-699.
CrossRef | Gscholar

(22)

Ralhan PK, Khanna RK, Singh SP, Singh JS (1985)
Phenological characteristics of the tree layer of Kumaun Himalayan forests. Vegetatio 60: 91-101.
CrossRef | Gscholar

(23)

Ranjitkar S, Luedeling E, Shrestha KK, Guan K, Xu J (2012)
Flowering phenology of tree Rhododendron along an elevation gradient in two sites in the eastern Himalaya. International Journal of Biometeorology 57 (2): 225-240.
CrossRef | Gscholar

(24)

Rawal RS, Bankoti NS, Smanat SS, Pangti YPS (1991)
Phenology of tree layer species from the timber line around Kumaun in central Himalaya, India. Vegetatio 93: 109-118.
CrossRef | Gscholar

(25)

Richardson AD, Bailey AS, Denny EG, Martin CW, O’Keefe J (2006)
Phenology of a northern hardwood canopy. Global Change Biology 12: 1174-1188.
CrossRef | Gscholar

(26)

Root TL, Price JT, Hall KR, Schneider SH, Rosenzweig C, Punds JA (2003)
Fingerprints of global warming on wild animals and plants. Nature 421: 57-60.
CrossRef | Gscholar

(27)

Saxena AK, Singh JS (1982)
A phytosociological analysis of woody species in forest communities of a part of Kumaun Himalaya. Vegetatio 50: 3-22.
CrossRef | Gscholar

(28)

Seghieri J, Galle S (1999)
Run-on contribution to a sahelian two-phase mosaic system: soil water regime and vegetation life cycle. Acta Oecologia 20: 209-218.
CrossRef | Gscholar

(29)

Shah S, Verma A, Tewari A (2014)
Timing of shift in phonological events in Rhododendron arboreum Sm. Influenced by climatic irregularities in Kumaun region of central Himalaya. Global Journal of Scientific Research 2: 59-59.
Gscholar

(30)

Singh JS, Singh SP (1992)
Forests of Himalaya: structure, functioning and impact of man. Gyanodaya Prakashan, Nainital, India, pp. 294.
Gscholar

(31)

Singh SP, Singh V (2013)
Certain observed and likely ecological responses to climate change in central Himalayas. Climate change and Environmental Sustainability 1: 73-80.
CrossRef | Gscholar

(32)

Singh SP, Zobel DB, Garkoti SC, Tewari A, Negi CMS (2006)
Pattern in water relations of central Himalayan trees. Tropical Ecology 47: 159-182.
Gscholar

(33)

Snedecor GW, Cochran WG (1967)
Statistical methods. Oxford and IBH Publishing Co., New Delhi, India, pp. 593.
Gscholar

(34)

Tewari A (1998)
Timing of drought: Effects of water relation of certain major forest types of lower and middle central Himalaya. PhD Thesis, Department of Forestry, Kumaun University, Nainital, India, pp. 133.
Gscholar

(35)

Valdiya KS (1980)
Startigraphic scheme of the sedimentary units of the Kumaun lesser Himalaya. In: “Stratigraphy and correlation of the lesser Himalayan formation” (Valdiya KS, Bhatiya SB eds). Hindustan publishing corporation, Delhi, India, pp. 7-48.
Gscholar

(36)

Vitasse Y, Bresson CC, Kremer A, Michalet R, Delzon S (2010)
Quantifying phenological plasticity to temperature in two temperate tree species. Functional Ecology 24: 1211-1218.
CrossRef | Gscholar

(37)

Walther GR, Post E, Conrey P, Menzel A, Parmensan C, Beebee TJC, Fromentin JM, Hoegh-Goldberg O, Bairlein F (2002)
Ecological responses to current climate change. Nature 416: 389-395.
CrossRef | Gscholar

(38)

Way DA (2011)
Tree phenology responses to warming: spring forward, fall back? Tree Physiology 31: 469-471.
CrossRef | Gscholar

(39)

Zobel DB, Garkoti SC, Singh SP, Tewari A, Negi CMS (2001)
Patterns of water potential among forest types of the central Himalaya. Current Science 80: 774-779.
Gscholar

(40)

Zobel DB, Singh SP (1995)
Tree water relations along the vegetational gradient in the Himalayas. Current Science 68: 742-745.
Gscholar

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