Elongation Patterns of Basal Internodes in Sweet Sorghum (Sorghum bicolor Moench)

Japanese Journal of Crop Science

Satoshi NAKAMURA¹  Yusuke GOTO¹ 

关键词: Age;    伸長節間;    Elongated internode;    スイートソルガム;    Growth curve;    生長曲線;    Internode position;    節間位;    Length of internode;    節間長;    Non elongated internode;    非伸長節間;    Sweet sorghum;    葉位齢;   

DOI  :  10.1626/jcs.65.324

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Based on the plant age (AL) indicated by leaf number, we analyzed the elongation patterns of basal internodes from the third internode (IN3) through IN10. Using two cultivars, Syrup sorgo 2 (S2, late-maturing) and High-sugar sorgo (HI, early-maturing) grown under field conditions in 1993, 20 plants were sampled when the leaf blade of the 4th through the 14th just fully expanded, and every internode length in the main stem was recorded. All internodes in IN9 and IN10 were classified as 'elongated internodes' (EIN: defined as that with final length more than 1.0cm), while those from IN3 through IN6 were classified as non 'elongated internodes'(non-EIN: defined as that with final length less than 1.0cm). In IN7 and IN8, both EIN and non-EIN existed. The EIN rapidly elongated from AL (n+1) when the (n+1) th leaf had just fully expanded to AL (n+3) and reached its maximum length by AL (n+4). This elongation pattern was similar to that of IN10 through IN19 as was reported previously. The non-EIN elongated from AL (n+1) to AL (n+2) and reached its maximum length by AL (n+3). At log phase of internode growth, the elongation rate of non-EIN was remarkably lower than that of EIN. It was suggested that the formation of intercalary meristem did not occur in the non-EIN. It is not likely that the elongation pattern of EIN and that of non-EIN were influenced by the cultivars.

【 授权许可】

Unknown