Models of Growth and Water Use of Field Peas (Pisum Sativum L.)

Wilson, D.R.; Jamieson, P. D.; Jermyn, W. A.; Hanson, Ronald L.

doi:10.1016/b978-0-407-00922-6.50017-9

Cited by 28 publications

(21 citation statements)

References 15 publications

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“…When the actual total DM yields for all treatments are expressed relative to the maximum yields in the control treatment (Treatment 1 ), the common slope is -0.0016 + 0.0003 g/m 2 per mm. This value is very similar to the-0.0022 ± 0.0002 g/m 2 per mm slope above the critical deficit reported by Wilson et al (1985). However, the latter value was found from trials in which D pmax was < 200 nun, compared with > 300 mm in this experiment.…”

Section: Discussionmentioning

confidence: 32%

“…In contrast, Zain et al (1983), Jamieson et al (1984), and Wilson et al (1985) presented data to indicate that timing of drought is not important. However, because of untimely rainfall in their trials, severe deficits did not occur in any treatments, particularly before flowering.…”

Section: Introductionmentioning

confidence: 51%

“…Although the fully irrigated treatment attained a potential deficit of 49 mm, there was no evidence that pea seed yield had reached a maximum at that deficit. On adjacent sites on the same soil type, Wilson et al (1985) found that, over 5 years of trials, the critical deficit, below which there was no further yield increase, was 88 mm. When the actual total DM yields for all treatments are expressed relative to the maximum yields in the control treatment (Treatment 1 ), the common slope is -0.0016 + 0.0003 g/m 2 per mm.…”

Section: Discussionmentioning

confidence: 99%

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Effect of timing and intensity of drought on the growth and yield of field peas (Pisum sativumL.)

Martin

Jamieson

1996

New Zealand Journal of Crop and Horticultural Science

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The response of field peas (Pisum sativum L.) to timing and intensity of drought was determined in an experiment in a mobile rainshelter, which excluded rainfall during growth of the crop. Twelve irrigation treatments subjected the crops to drought of varying duration at different stages during plant growth. Before and after the drought, the crops were fully irrigated. Pea seed yield decreased linearly as the maximum potential soil moisture deficit (D pmax ) experienced during the growth of the crop increased from 49 to 323 mm. The timing of D pmax did not affect the decline in pea seed yield, but did affect the total dry matter (DM) produced by the crop. If D pmax occurred before flowering, radiation interception and total DM yield were reduced more than if D pmax occurred after flowering. However, this total yield reduction was completely offset by an increase in individual pea weight and consequently an increased harvest index. Pea seed yield was closely related to pod number per unit area, which was also strongly related to water stress. The number of peas per pod was unaffected by water stress.

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Section: Discussionmentioning

confidence: 32%

Section: Introductionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

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Effect of timing and intensity of drought on the growth and yield of field peas (Pisum sativumL.)

Martin

Jamieson

1996

New Zealand Journal of Crop and Horticultural Science

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“…Crop establishment depends on an interaction between seedbed environment and seed quality (Brown et al 1989;KhajehHosseini et al 2003). Factors adversely affecting seed germination may include sensitivity to drought stress (Wilson et al 1985). A large number of studies have been carried out on the effects of water stress on the germination of forest tree species, and most species and provenances have shown a different sensitivity to water stress with regards to germination and subsequent root growth.…”

Section: Introductionmentioning

confidence: 99%

Effect of osmotic stress on Myrtus communis germination

et al. 2012

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The effects of water potential on germination were studied in four provenances of Myrtus from different bioclimatic zones in Tunisia. Water potential between 0 and -10 bars were obtained using polyethylene glycol 6000 (PEG-6000) solutions. Seeds were planted in Petri dishes full of sterile perlite, and kept for one month under 1500 lux light with 16h photoperiod and at 25• C. A low water potential induced a reduction in germination percentage and germination speed. Significant variations between the provenances were found even under control conditions, especially at the speed germination level. The provenances from humid regions were the most susceptible to water stress, and their germination percentage showed significant reductions at −8 bars. These differences in germination ability of provenances might be attributed to intraspecific variations resulting from the effects of natural selection and genetic pool background.

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“…However, germination of Lotus creticus was significantly delayed and reduced with increased NaCl to levels above 300 mM (Rejili et al, 2009). Another factor that may negatively affect seed germination is moisture stress (Wilson et al, 1985). Seeds exposed to unfavorable environmental conditions, like water stress, have poor seedlings establishment (Albuquerque & Carvalho, 2003).…”

Section: Introductionmentioning

confidence: 99%

Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia

et al. 2013

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-Rhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, salinity, moisture stress, pH, and soil depth affected germination and seedling emergence of R. capitata. Germination increased as temperature increased from 25 o C and significantly reduced at 45 o C. Presence or absence of light did not influence germination. Germination of R. capitata was sensitive to increased salt and moisture stress, as well as to seed burial depth. Only 48% of seeds germinated at 150 mM salt concentration compared to 100% in control (distilled water). Similarly, 15% of seeds germinated at an osmotic potential of -0.8 MPa compared to 88% at -0.2 MPa. The optimum pH for seed germination of R. capitata was 7 (98% germination), but the seeds also germinated at lower level of pH 5 (85%) and at higher level of pH 10 (75%). In seed burial trial, maximum seedling emergence of 93% occurred at 2 cm depth, and seedling did not emerge from a depth of 12 cm. The high germination ability of R. capitata under a wide range of ecological factors suggests that this species is likely to be the one to cause more problems in a near future, if not managed appropriately.Keywords: moisture stress, pH, salinity, seedling emergence, burial depth.RESUMO -A Rhynchosia capitata vem se tornando um problema crescente para culturas de verão como algodão, soja, milheto e feijão-mungo em muitos países asiáticos. Foram feitos estudos de laboratório e estufa para determinar os efeitos de vários fatores ambientais sobre os padrões de germinação das sementes e emergência das plântulas de R. capitata. Diversos fatores ecológicos, tais como, temperatura, luz, salinidade, estresse hídrico, pH e profundidade do solo foram avaliados para saber se afetam a germinação e emergência das plântulas de R. capitata. A germinação aumentou à medida que a temperatura aumentou a partir de 25 o C e reduziu significativamente a 45 o C. A presença ou ausência de luz não influenciou a germinação. A germinação das sementes de R. capitata se mostrou sensível ao aumento dos estresses hídrico e salino, bem como à profundidade do enterrio das sementes. Apenas 48% das sementes germinaram a 150 mM de concentração salina, em comparação com 100% no controle (água destilada). Do mesmo modo, 15% das sementes germinaram a um potencial osmótico de -0,8 MPa, em comparação com 88% a -0,2 MPa. O pH ideal para a germinação de sementes de R. capitata foi 7 (98% de germinação), mas as sementes germinaram também a um nível inferior de pH 5 (85%) e superior de pH 10 (75%). No experimento de enterrio das sementes, a máxima emergência das plântulas de 93% foi a 2 cm de profundidade e as plântulas não emergiram a partir da profundidade de 12 cm. A alta capac...

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Models of Growth and Water Use of Field Peas (Pisum Sativum L.)

Cited by 28 publications

References 15 publications

Effect of timing and intensity of drought on the growth and yield of field peas (Pisum sativumL.)

Effect of timing and intensity of drought on the growth and yield of field peas (Pisum sativumL.)

Effect of osmotic stress on Myrtus communis germination

Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia

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