Water-use efficiency, leaf area and leaf gas exchange of cowpeas under mid-season drought

Anyia, Anthony O.; Herzog, H.

doi:10.1016/s1161-0301(03)00038-8

Cited by 220 publications

(158 citation statements)

References 35 publications

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“…The observed changes in growth, biomass production, and partitioning of B. faberi var. microphylla under various water availability supported findings of other studies on tree seedlings (Rose et al 1993;Yin et al 2004), shrubs (Niu et al 2005; Martin and Stephens 2006;Villagra and Cavagnaro 2006), and herbs (Greco1 and Cavagnaro 2002; Anyia and Herzog 2004;Liu and Stützel 2004;Rodiyati et al 2005). The present study indicated that although there was no mortality during the experiment, the B. faberi var.…”

Section: Discussionsupporting

confidence: 84%

“…Physiological and morphological changes occur on plants in response to various water availabilities (Becker et al 1994;Franca et al 2000;Royo et al 2001; Anyia and Herzog 2004;González-Rodríguez et al 2005;Dias et al 2007). The immediate responses to water deficit are the declines of leaf water potential and stomatal closure, which led to decreases in CO 2 uptake and photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

“…The immediate responses to water deficit are the declines of leaf water potential and stomatal closure, which led to decreases in CO 2 uptake and photosynthesis. Furthermore, prolonged drought can limit growth and biomass production, and cause plant death (Ogbonnaya et al 1998; Anyia and Herzog 2004;Schrader et al 2005;Rodiyati et al 2005). The relationship DM = WUE 9 WU indicates that the dry mass production (DM) increased with increasing wateruse efficiency (WUE) for constant water use (WU) (Martin et al 1999;Rytter 2005).…”

Section: Introductionmentioning

confidence: 99%

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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: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…A set of contrasting cowpea genotypes, selected for differences in grain yield under terminal water stress across field conditions, also contrasted for leaf area at the time of flowering, with tolerant genotypes exhibiting less leaf area (Belko et al 2012). Anyia and Herzog (2004) also showed that genotypes with larger leaf areas showed lower water stress avoidance. Similar examples can be found outside of legume crops.…”

Section: Leaf Canopy Developmentmentioning

confidence: 91%

Water: the most important ‘molecular’ component of water stress tolerance research

Vadez

Kholová

Zaman-Allah

et al. 2013

Functional Plant Biol.

104

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Abstract. Water deficit is the main yield-limiting factor across the Asian and African semiarid tropics and a basic consideration when developing crop cultivars for water-limited conditions is to ensure that crop water demand matches season water supply. Conventional breeding has contributed to the development of varieties that are better adapted to water stress, such as early maturing cultivars that match water supply and demand and then escape terminal water stress. However, an optimisation of this match is possible. Also, further progress in breeding varieties that cope with water stress is hampered by the typically large genotype Â environment interactions in most field studies. Therefore, a more comprehensive approach is required to revitalise the development of materials that are adapted to water stress. In the past two decades, transgenic and candidate gene approaches have been proposed for improving crop productivity under water stress, but have had limited real success. The major drawback of these approaches has been their failure to consider realistic water limitations and their link to yield when designing biotechnological experiments. Although the genes are many, the plant traits contributing to crop adaptation to water limitation are few and revolve around the critical need to match water supply and demand. We focus here on the genetic aspects of this, although we acknowledge that crop management options also have a role to play. These traits are related in part to increased, better or more conservative uses of soil water. However, the traits themselves are highly dynamic during crop development: they interact with each other and with the environment. Hence, success in breeding cultivars that are more resilient under water stress requires an understanding of plant traits affecting yield under water deficit as well as an understanding of their mutual and environmental interactions. Given that the phenotypic evaluation of germplasm/breeding material is limited by the number of locations and years of testing, crop simulation modelling then becomes a powerful tool for navigating the complexity of biological systems, for predicting the effects on yield and for determining the probability of success of specific traits or trait combinations across water stress scenarios.

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“…These prove that water stress was a very important limiting factor at the initial phase of plant growth (Shao et al, 2008). Water stress also results in reduction of leaf area, where the leaf growths were inhibited and the older leaves fell down (Anyia and Herzog, 2004). Reduction of expansion of young leaves and loss of older leaves caused a decreased in the LAR in the stressed plants (Paknejad et al, 2009).…”

Section: Growth Responsesmentioning

confidence: 79%

Evaluation of <i>Hevea brasiliensis</i> (Latex Timber Clone: RRIM 2001 and RRIM 3001) in Relation to Different Water Stress

Mokhatar

Daud

Zamri³

2011

American Journal of Agricultural and Biological Sciences

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Problem statement: Rubber, Hevea brasiliensis, has been traditionally planted in the humid tropics, which is characterized by high rainfall throughout the year. However, due to an increase in world's demand for rubber, future planting will be established in dry areas, characterized by prevalence water stress. Utilizing limited resource, in dry areas or to use water wisely is very important. This study provides a detail evaluation of morphological and physiological responses of rubber trees at nursery stage in relation to different water stress. Approach: Two new latex timber clones from Malaysia Rubber Board (MRB), RRIM 2001 and RRIM 3001 were used in this study. Five levels of treatment were used; plants irrigated for every two days, five days, 10 days, 15days and everyday which acted as control. The experimental design used was a Completely Randomized Block Design (RCBD) with four replications. Results: Fundamental changes of plant growth and physiological responses showed that treatment with well watered for clone RRIM 2001 (T1) had higher values than other treatments. Harvest index highest in well watered (T1) with mean 20.73, while T5 were lowest with the mean 5.03. Stomata conductance showed significant difference between T6 with 0.161µmol m -2 s -1 compared to under stress treatments with 0.00 µmol m -2 s -1 . There was treatment failure to adapt to water stress at treatments withholding water for 15days followed by treatments 10days and five days. Conclusion: RRIM 2001 and RRIM 3001 clones had responded to water stress by indicating changes in morphological and physiological responses. This indicated that Hevea brasiliensis cannot withstand water stress.

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Water-use efficiency, leaf area and leaf gas exchange of cowpeas under mid-season drought

Cited by 220 publications

References 35 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

Water: the most important ‘molecular’ component of water stress tolerance research

Evaluation of <i>Hevea brasiliensis</i> (Latex Timber Clone: RRIM 2001 and RRIM 3001) in Relation to Different Water Stress

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