This model can identify the impact of each of the factors that lead to the abortion of seeds and pods in WOSR, which include the position effect, assimilate competition and pollination limitation. Our results indicate that pollen germination is a factor that determines final seed number. Furthermore, the distribution parameters of the pollen number per stigma ( m) remained stable, and the probability of pod survival ( Bo) varied with different factors, including the year, pod rank and inflorescence position.
This effect could be due to the competition for assimilates between the pods and seeds. Ramification-clipping treatment increased the number of ovules per ovary ( μ: 31 for control plants and 32 for clipped plants), the parameter k and the number of seeds per pod ( p). The mean number of seeds per pod on the main stem and the bottom ramification along the stem was larger than the other ramifications within one plant. Inflorescence position influenced the number of ovules per ovary ( μ: 30.8–33.8 from top to bottom) and the parameter k. The proportion of effective pollen grains ( k) significantly decreased with pod rank at the end of the main stem. The year had no effect on the number of ovules per ovary ( μ) and the probability of seed viability ( p). The variations in the parameters were analysed according to the following four factors: year, pod rank, inflorescence position and ramification-clipping treatment. Experiments were done in Grignon (France) in 20.
The generalised least squares method was implemented to estimate the model parameters using the experimental data. Here, we present a stochastic probabilistic model of seed development. As a result of the complexity of the developmental patterns of WOSR, it is challenging to identify the roles of various factors that influence seed production using an experimental approach.
This study aimed to reproduce the process of seed development in WOSR based on a limited number of parameters. Any difficulty during the process of seed production may result in seed or pod abortion. It does not store any personal data.In winter oilseed rape (WOSR), only a subset of ovules can develop into seeds in the majority of pods. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is used to store the user consent for the cookies in the category "Other. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". En revanche, les capitales rgionales sont, elles, tudier avec intrt.
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