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Queensland University of Technology (2017)

The impact of water deficit on the growth and yield performance of sesame (Sesamum indicum l.) : Analysis through mathematical modelling

Imaduwa Arachchige, Jinendra Kumari Dissanayake

Titre : The impact of water deficit on the growth and yield performance of sesame (Sesamum indicum l.) : Analysis through mathematical modelling

Auteur : Imaduwa Arachchige, Jinendra Kumari Dissanayake

Université de soutenance : Queensland University of Technology

Grade : Doctor of Philosophy (PhD) 2017

Résumé
This thesis investigated the effect of drought stress on agronomical, and physiological characteristics of sesame plants during growth and development, and analysed such responses using Fuzzy set theory (FST) and Artificial Neural Networks (ANN), two mathematical modeling tools. Subjected to cultivar and developmental stages exposed to drought, tested sesame cultivar/s expressed versatile morphological adaptations and adjusted leaf osmotic potential as a drought tolerant mechanism to survive drought conditions. The thesis proposed FST models with various membership functions to describe germination, growth and yield responses of sesame cultivars, and ANN models to forecast sesame yield under given climatic conditions.

Mots clés : Sesamum indicum L., Sesame/ Gingelly, Artificial Neural Network models, Fuzzy modelling, Osmoregulation, Water deficit conditions, Drought tolerant sesame, Sesame morphological variation, Sri Lankan sesame, Drought stress

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Page publiée le 7 février 2018