Association of root, specific leaf area and SPAD chlorophyll meter reading to water use efficiency of peanut under different available soil water

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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“…Other study on peanut with several soil water levels also gave the same results on harvest index (Songsri et al, 2009). …”

Section: Growth Responsessupporting

confidence: 67%

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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“…Water use efficiency (Songsri et al, 2009;Marcelo et al, 2013) is deemed here as the photosynthesis rate, Pn at the leaf level divided by evapotranspiration, ET.…”

Section: Measurement Of Water Use Efficiency (Wue)mentioning

confidence: 99%

“…This might be achieved through the selection for larger, deeper root systems, and smaller leaf area (for better drought adaptation). The ability for the soil to retain moisture is therefore, inextricably linked to drought avoidance in grasses (Songsri et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…These include the ability of root systems to capture water at greater depths, specic leaf area (SLA; ratio of leaf area to leaf dry weight), grass growth that may be achieved through a chlorophyll reading (e.g. measuring F v /F m , photosynthetic efficiency) (Songsri et al, 2009), optical sensors measuring the normalized differences in vegetation index (NDVI), and turf digital colour analysis (Leinauer et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The basis to drought resistant is essentially the enhanced ability to mine water from the soil (Qian and Fry, 1997;Songsri et al, 2009). This might be achieved through the selection for larger, deeper root systems, and smaller leaf area (for better drought adaptation).…”

Section: Introductionmentioning

confidence: 99%

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Association of root, specific leaf area and SPAD chlorophyll meter reading to water use efficiency of peanut under different available soil water

Cited by 126 publications

References 21 publications

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

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

Performance Assessment of Three Turfgrass Species, in Three Different Soil Types, and their Responses to Water Deficit in Reinforced Cells, Growing in the Urban Environment

Groundnut: Genetic Approaches to Enhance Adaptation of Groundnut (Arachis Hypogaea, L.) to Drought

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