Trunk strangulation and winter heating effects on carbohydrate level and its relation with flowering, fruiting and yield of 'Tosa Buntan' pummelo grown in a plastic house

acide malique acido malico azote azucares calidad carbohidratos carbohydrates chadec chemical composition citrus grandis citrus maxima composition chimique cultivo protegido cultural methods culture sous abri dimension dimensions etapas de desarrollo de la planta fleur floraison flores flowering flowers fructification fruiting fruits frutas glucide incision annulaire malic acid metabolism metabolisme metabolismo mode de culture nitrogen plant developmental stages pomelo poncirus trifoliata protected cultivation pummelos quality ringing saccharose size sucres sucrosa sucrose sugars temperatura temperature