冬期の夜温と長日処理がキンギョソウの開花,収量と切り花品質に及ぼす影響(栽培管理・作型)  [in Japanese] Effects of Night Temperatures and Day Length in the Winter on the Flowering, Yields and Quality of Snapdragon (Antirrhinum majus. L.) (Crop Production & Cropping Type)  [in Japanese]

キンギョソウ3品種'メリーランドピンク','ライトピンクバタフライII'および'ヴェルン'を冬期の夜温(6℃,11℃),日長(自然日長,16時間日長)の組み合わせで摘心栽培および無摘心栽培を行った.摘心栽培においては夜温が高いと開花が早くなったが,長日による開花促進は認められなかった.採花本数は'ライトピンクバタフライII'では夜温11℃と長日処理の組み合わせで最大となったが,'メリーランドピンク'と'ヴェルン'では処理による差はみられなかった.切り花品質および切り花長には長日処理の影響はみられなかった.無摘心栽培においては夜温が高いと定植〜発らいおよび発らい〜開花の両期間を短縮したが,長日処理は発らいまでの期間のみを短縮した.長日処理により供試品種の節数が減少したが,'ライトピンクバタフライII'では夜温が高いことでも節数が減少した.

The snapdragon (Antirrhinum majus. L.) variety Maryland Pink, Light Pink Butterfly n and Verne were grown under 2 night temperatures(6℃, 11℃) and 2 photoperiods (Natural day, 16-hr day length) in winter with pinching and non-pinching cultivation. In pinching cultivation, the flowering of the stem was accelarated by high night temperature, but that was not accelarated by long day treatment. Yields of cut flowers of Light Pink Butterfly II were the largest when grown under a combination of night temperature of 11℃ and long day treatment, while those of Maryland Pink and Verne were not affected by night temperature and long day treatment. Cut flower quality was not affected by long day treatment. In non-pinching cultivation, the whole growth period was accelarated by a high night temperature, but only the flower development was accelarated by long day treatment. The number of plant nodes was decreased by long day treatment. In Light Pink Butterfly II, the node number decreased even high night temperature so.