Growth and water use of faba beans (Vicia faba) in a sub-humid climate I. Root and shoot adaptations to drought stress

Husain, M. M.; Reid, JB; Othman, Hasnol; Gallagher, J. N.

doi:10.1016/0378-4290(90)90093-q

Cited by 47 publications

(25 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Typically, plants respond to water shortage by a larger relative allocation of carbon to roots and if this occurs for a prolonged period, it may lead to enhanced root growth in absolute terms (Husain et al, 1990). This, though, is unusual.…”

Section: Effects Of Drought On Partitioningmentioning

confidence: 99%

Root systems and root:mass ratio-carbon allocation under current and projected atmospheric conditions in arable crops

1995

View full text Add to dashboard Cite

Roots of annual crop plants are a major sink for carbon particularly during early, vegetative growth when up to one-half of all assimilated carbon may be translocated belowground. Flowering marks a particularly important change in resource allocation, especially in determinate species, with considerably less allocation to roots and, depending on environmental conditions, there may be insufficient for maintenance. Studies with 14C indicate the rapid transfer belowground of assimilates with typically 50% translocated in young cereal plants of which 50% is respired; exudation/rhizodeposition is generally <5% of the fixed carbon. Root:total plant mass decreases through the season and is affected by soil and atmospheric conditions. Limited water availability increased the allocation of 13C to roots of wheat grown in columns so that at booting 0.38 of shoot C (ignoring shoot respiration) was belowground compared to 0.31 in well-watered plants. Elevated CO2 (700 #mol CO2 mol-l air) increased the proportion of root:total mass by 55% compared with normal concentration, while increasing the air temperature by a mean of 3 °C decreased the proportion from 0.093 in the cool treatment to 0.055 in the warm treatment.

show abstract

Section: Effects Of Drought On Partitioningmentioning

confidence: 99%

Root systems and root:mass ratio-carbon allocation under current and projected atmospheric conditions in arable crops

1995

View full text Add to dashboard Cite

show abstract

“…1996). Husain et al. (1990) also reported that plants respond to water shortage by allocating more carbon to roots and, if this occurs for a prolonged period, enhanced root growth may result.…”

Section: Introductionmentioning

confidence: 98%

“…nutrients or water) by shifting their partitioning to tissues and processes associated with gaining less resources (Gedroc et al 1996). Husain et al (1990) also reported that plants respond to water shortage by allocating more carbon to roots and, if this occurs for a prolonged period, enhanced root growth may result. Partitioning of dry matter in plants may be in¯uenced by many environmental factors, including drought and nutrient de®ciency (Gregory 1989, Wardlaw 1990).…”

Section: Introductionmentioning

confidence: 99%

Effects of Interactions of Moisture Regime and Nutrient Addition on Nodulation and Carbon Partitioning in Two Cultivars of Bean (Phaseolus vulgaris L.)

Boutraa

Sanders

2001

J Agronomy Crop Science

View full text Add to dashboard Cite

Major limitations of bean (Phaseolus vulgaris L.) production in arid and semiarid regions are lack of moisture and low soil fertility. An experiment was conducted to determine the effects of soil moisture and N : P : K (20 : 10 : 10) fertilizer on root and shoot growth of two cultivars of bean: cv. Carioca, an indeterminate Brazilian landrace, and cv. Prince, a determinate cultivar grown in Europe. Carioca appears generally stress‐tolerant while Prince is intolerant. Seedlings were grown in pots of non‐sterile soil at 30, 60 or 90 % field capacity (FC), and given 0, 0.1 or 1 g (kg soil)–1 of compound fertilizer. The soil contained a population of effective Rhizobium. Growth of both cultivars was greatest in the high moisture and high nutrient treatments. Root fractions were highest at low nutrient supply; the effect of water was not significant. Leaf fraction decreased as root fraction increased. Numbers of nodules were highest at high and intermediate moisture when no fertilizer was applied. Numbers were lowest at 30 % FC and at the highest fertilizer rate. Masses of nodules and fractions followed the same pattern. Decreasing water regime reduced the relative growth rate (RGR) of Prince, while Carioca maintained high RGR at unfavourable conditions of water and nutrients. Net assimilation rates (NAR) were unaffected by nutrient addition, and reduced by low moisture regime. Water use efficiencies (WUEs) were reduced by water stress but increased by nutrient deficiency. The water utilization for dry matter production was optimal at 60 % FC.

show abstract

“…The RUE concept has been used in the modeling of dry matter based on the assumption that RUE is relatively constant in stress-free environments. Evidences have shown, however, that RUE is strongly influenced by environmental stresses (i.e., temperature, solar radiation, and water (1,2,3,4,5). Soil stresses should similarly affect RUE but few responses have been actually documented (6).…”

Section: Introductionmentioning

confidence: 95%

Radiation use‐efficiency of field beans as affected by soil phosphorus management

Manrique

1993

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

A simple approach to modeling dry matter production is based on the assumption that radiation-use efficiency (RUE), which is the amount of dry weight produced per unit of intercepted photosynthetically active radiation (IPAR), is relatively constant for crops adequately supplied with water and nutrients.Recent evidences, however, indicate that RUE is not constant but is strongly affected by environment. Soil stresses also appear to affect RUE but few responses have been documented. Growth analysis data from a field experiment were used to compute RUE of field beans grown at differential phosphorus (P) regimes. The main objective of this study was to assess the effects of soil P management on RUE. Applied P rates significantly increased RUE with values ranging from 0.86 g M/J at 0 kg P/ha to 1.09 g M/J at 200 kg P/ha. The relationship between total dry matter and cumulative EPAR was linear at low P regimes but resembled a curvilinear relationship at high P regimes. The RUE of beans under high soil P regimes was not constant but decreased over time.

show abstract

Growth and water use of faba beans (Vicia faba) in a sub-humid climate I. Root and shoot adaptations to drought stress

Cited by 47 publications

References 28 publications

Root systems and root:mass ratio-carbon allocation under current and projected atmospheric conditions in arable crops

Root systems and root:mass ratio-carbon allocation under current and projected atmospheric conditions in arable crops

Effects of Interactions of Moisture Regime and Nutrient Addition on Nodulation and Carbon Partitioning in Two Cultivars of Bean (Phaseolus vulgaris L.)

Radiation use‐efficiency of field beans as affected by soil phosphorus management

Contact Info

Product

Resources

About