Effects of controlled irrigation on water potential, nitrogen uptake and biomass production in Dalbergia sissoo seedlings

Singh, Bilas; Singh, G.

doi:10.1016/j.envexpbot.2004.11.001

Cited by 30 publications

(24 citation statements)

References 22 publications

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“…Our study was consistent with those on other species (e.g., Ares and Fownes 1999;Bargali and Tewari 2004;Liu and Stützel 2004;Singh and Singh 2006), in that water stress decreased total dry mass and their components, and altered biomass allocation to root systems resulting in higher R:S ratio in stressed seedlings (Table 1). The positive correlation between root mass and WUE of B. faberi var.…”

Section: Discussionsupporting

confidence: 80%

Growth, biomass partitioning, and water-use efficiency of a leguminous shrub (Bauhinia faberi var. microphylla) in response to various water availabilities

Bao

et al. 2008

New Forests

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Responses of the endemic leguminous shrub Bauhinia faberi var. microphylla, to various soil water supply regimes were studied in order to assess water stress tolerance of seedlings. Two-month-old seedlings were grown under water supply regimes of 100, 80, 60, 40, and 20% water field capacity (FC), respectively, in a temperature and light-controlled greenhouse. Plant height and leaf number were measured monthly over a 4-month period, while water use (WU), water-use efficiency (WUE), leaf relative water content (RWC), biomass production and its partitioning were recorded at the end of the experiment. Seedlings exhibited the greatest biomass production, height, basal diameter, branch number, leaf number, and leaf area when soil content was at 100% FC, and slightly declined at 80% FC. These parameters declined significantly under 60% FC water supply, and severely reduced under 40 and 20% FC. RWC, WU and WUE decreased, while the ratio of root mass to stem mass (R:S) increased in response to decreasing water supply. Water stress caused leaf shedding, but not plant death. The results demonstrated that B. faberi var. microphylla seedlings could tolerate drought by reducing branching and leaf area while maintaining a high R:S ratio. However, low dry mass and WUE at 40 and 20% FC suggested that the seedlings did not produce significant biomass under prolonged severe water deficit. Therefore, before introducing B. faberi var. microphylla in vegetation restoration efforts, water supply above 40% FC is recommended for seedlings to maintain growth.

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Section: Discussionsupporting

confidence: 80%

Growth, biomass partitioning, and water-use efficiency of a leguminous shrub (Bauhinia faberi var. microphylla) in response to various water availabilities

Bao

et al. 2008

New Forests

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show abstract

“…Similar results were reported by Nautiyal et al (2002) and Bhatt and Rao (2005). In accordance with this it was shown (Singh and Singh, 2006), that Dalbergia sissoo produced less roots under drought.…”

Section: Discussionsupporting

confidence: 72%

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Goraibr

Neffati

2010

Emir. J. Food Agric

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Abstract:This study aims to compare the growth attributes and water relationship of two-forage legume plants: a crop plant, Medicago sativa (L.) cv. Gabès, and a wild plant, Astragalus gombiformis (Pom.), under drought-stress conditions. Water deficit stress was imposed at 40% and 70% of field capacity (FC) from 60 to 90 days after sowing, while the control pots were maintained at 100% FC throughout the period of entire growth. The results showed that the high potentialities of growth in both species were recorded for control plants. Water deficit reduced growth (whole plant biomass, leaf number, stem elongation rate and shoot relative growth rate) and decreased shoot/root ratio. After 30 days of water deficit stress, the leaf relative water content (RWC) and the water potential (Ψ w ) evolved in such a way and decreased significantly as water stress was intensified. The lowest level of transpiration rate of the most stressed plants may be explained by the lowering of leaf RWC. Under such conditions, the water use efficiency of wild plants was more pronounced than alfalfa plants. It can be concluded that A. gombiformis manifested the best morpho-physiological traits of adaptation to moisture stress when compared to M. sativa. This wild plant appears to be more tolerance to water stress than that cultivated, therefore a possibility of exploitation of this species.

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“…This finding also strongly supports the view that the availability of water is a major constraint to plant production in arid and semi-arid regions around the world (Singh and Singh 2006;Hu et al 2008). In the present study, under the relatively lower levels of W, the greater suppression of BY associated with the obvious reduction in SH, LA and P N was observed in monofactor effects analysis (Fig.…”

supporting

confidence: 78%

“…Seedlings were harvested at the end of the experiment (mid-November 2008) for estimation of BY. Dry weight of leaves, stems and roots was recorded after oven-drying of samples for 72 h at 80 C (Singh and Singh 2006). LA was measured with an automatic leaf area meter LI-3000 (LI-COR Inc., Lincoln, NE, USA) before harvest.…”

Section: Growth Parameters Measurementsmentioning

confidence: 99%

Interactions between soil water content and fertilizer on growth characteristics and biomass yield of Chinese white poplar (Populus tomentosaCarr.) seedlings

Wang

Qin

et al. 2011

Soil Science and Plant Nutrition

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Effects of controlled irrigation on water potential, nitrogen uptake and biomass production in Dalbergia sissoo seedlings

Cited by 30 publications

References 22 publications

Growth, biomass partitioning, and water-use efficiency of a leguminous shrub (Bauhinia faberi var. microphylla) in response to various water availabilities

Growth, biomass partitioning, and water-use efficiency of a leguminous shrub (Bauhinia faberi var. microphylla) in response to various water availabilities

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Interactions between soil water content and fertilizer on growth characteristics and biomass yield of Chinese white poplar (Populus tomentosaCarr.) seedlings

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