Characterization of the final stage in seed abortion in indeterminate soybean, white lupin and pea

Pigeaire, Alix; Duthion, C.; Turc, Olivier; Gonthier, Josette

doi:10.1051/agro:19860407

Cited by 31 publications

(10 citation statements)

References 3 publications

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“…This is consistent with previous reports of the effects of disease occurring on the whole plant or on the vegetative parts of the plant (Garry et al, 1996. This critical stage, defined as such by Pigeaire et al (1986) for healthy plants and observed in conditions of abiotic stress (water supply deficiency, e.g. Ney, Duthion & Turc (1994)).…”

Section: Seed Number and Isw As A Function Of Diseasesupporting

confidence: 92%

Effects of pod infection by Mycosphaerella pinodes on yield components of pea (Pisum sativum)

Béasse¹,

Ney²,

Tivoli³

1999

Annals of Applied Biology

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Yield reduction of pea (Pisum sativum) due to various types of infections by Mycosphaerella pinodes on pods was assessed. A range of disease severities was created on pods of pea plants grown in the glasshouse, by painting the pods with different concentrations of spore suspensions, at three different pod development stages: lag phase, the beginning of seed filling (BSF) and mid-filling of the seeds.Seed number at harvest was reduced only if the pods were infected before BSF, as shown previously for whole plant infections. Pod infections led to individual seed weight (ISW) losses from zero (for late infections, at mid-filling) to 20% (for earlier infections and severe disease). Infection during the lag phase affected ISW by reducing seed growth rate, whereas infection at BSF tended to reduce the duration of seed filling. There was a linear relationship between the area under the disease progress curve and the percentage decrease in ISW. This model should be complemented by the effect of leaves and stem infections, in order to predict ISW losses in diseased crop conditions, in which epidemics occur on all aerial parts of the pea plant.

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Section: Seed Number and Isw As A Function Of Diseasesupporting

confidence: 92%

Effects of pod infection by Mycosphaerella pinodes on yield components of pea (Pisum sativum)

Béasse¹,

Ney²,

Tivoli³

1999

Annals of Applied Biology

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“…This corresponds to evidence that seed number per square meter is related to canopy photosynthesis during the same period (e.g., Heitholt et al, 1986; Egli et al, 1985; Jones et al, 1984; Egli and Yu, 1991). Seed number per square meter is determined prior to the period of linear seed growth for any particular pod (Pigeaire et al, 1986; Duthion and Pigeaire, 1991). The sequential fruiting characteristic of soybean results in a range of developmental stages of reproductive organs on the same plant (e.g., Spaeth and Sinclair, 1984a).…”

Section: Discussionmentioning

confidence: 99%

Short‐Season Soybean Yield Compensation in Response to Population and Water Regime

Purcell²,

2000

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Short‐season soybean [Glycine max (L) Merr.] production systems, such as double cropping and late sowing, require high populations to optimize yield, but effects of high populations on seed number and seed mass are unknown. We evaluated plant population effects on yield compensation, stability of harvest index, assimilate partitioning for seed number, and seed‐filling characteristics for 2 yr near Keiser, AR. The study had two cultivars, two levels of irrigation, and three row spacings that each had five levels of population ranging from 6 to 134 plants m−2 Increasing population reduced yield per plant but increased yield per unit area. Harvest index was relatively constant across populations for a given year and irrigation regime, and yield was closely associated with biomass at maturity. At high populations, plants maintained individual seed mass by reducing the proportion of shell mass per pod. Final individual seed mass, seed growth rate (SGR), and the length of effective filling period did not change with increasing population for irrigated or nonirrigated treatments. Reductions in yield caused by low population density were due to low seed number. Seed number per square meter was directly proportional to the ratio of crop growth rate (CGR) to SGR. For short‐season production, high populations ensured early canopy coverage and maximized light interception, CGR, and crop biomass, resulting in increased seed number and yield potential.

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“…During seed set, seed abortions can occur. At the end of this first period, called the final stage in seed abortion (Pigeaire et al, 1986), the final seed number of the pod is fixed. The total seed number per stem is fixed when the last pod of the stem reaches this stage.…”

Section: Methodsmentioning

confidence: 99%

Agronomic Performance of Different Pea Cultivars Under Various Sowing Periods and Contrasting Soil Structures

Vocanson

Jeuffroy

2008

Agronomy Journal

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Yield variability of spring pea (Pisum sativum L.) in farmers' fi elds is mainly due to soil compaction at sowing and abiotic stresses during the reproductive period. Winter peas fl ower earlier, and thus should be less sensitive to abiotic stress at the end of the cycle, but because of their sensitivity to frost they must be sown late in autumn when soils are very wet. Pea breeders are working on new winter cultivars that are more resistant to frost and highly sensitive to photoperiod and that could be sown earlier in autumn under better soil conditions. Our aim was to measure crop growth, development, and seed yield of diff erent types of pea cultivars using factorial experiments that evaluated the eff ect of soil structure, sowing period, and cultivar at two sites in France. Compaction reduced seed yield by 18% at Grignon and 6% at Estrées-Mons, but had no signifi cant eff ect on crop development. November sowings resulted in increased seed yield of about 1 t ha -1 at both sites compared with spring sowings, and were associated with larger numbers of reproductive nodes and seeds m -2 . Cultivars exhibited contrasting characteristics in terms of mean seed dry weight, seeds m -2 , and number of reproductive nodes, but fi nal seed yields were similar within sowing periods. Th e ability of the crop to convert crop growth rate to seed number was independent of environment but decreased linearly with mean seed dry weight of the cultivar. Th is research suggests that pea breeders should develop new winter pea cultivars with earlier fl owering to enhance yield.

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Characterization of the final stage in seed abortion in indeterminate soybean, white lupin and pea

Cited by 31 publications

References 3 publications

Effects of pod infection by Mycosphaerella pinodes on yield components of pea (Pisum sativum)

Effects of pod infection by Mycosphaerella pinodes on yield components of pea (Pisum sativum)

Short‐Season Soybean Yield Compensation in Response to Population and Water Regime

Agronomic Performance of Different Pea Cultivars Under Various Sowing Periods and Contrasting Soil Structures

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