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eng
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Description
The relationship between spikelet number per unit area (spikelet density, SD) and spikelet number components (SNCs) was analyzed. The spikelet density was the product of five SNCs: panicle number per unit area (PN), the number of differentiated primary rachis-branches per panicle, the number of differentiated secondary rachis-branches per differentiated primary rachis-branch (SB), the number of differentiated spikelets per differentiated secondary rachisbranch, and spikelet degeneration percentage. The relationship between SNCs and shoot nitrogen (N) or dry weight (DW) was also researched. By using multiple regression analysis, the PN and the SB were the most and the next most contributory factors to the SD, respectively. The PN and the SB had the highest correlation with N amount at the early spikelet differentiation stage (ESD) and the increment of N concentration from panicle initiation (PI) to ESD, respectively. It is concluded that the SD can be expressed by three parameters by using multiple regression analysis, which the parameters were N amount at the ESD, the increment of N concentration from PI to the ESD, and the DW , per differentiated spikelet at heading.
Journal Title
島根大学生物資源科学部研究報告
Volume
5
Start Page
13
End Page
18
ISSN
13433644
Published Date
2000-12-20
NCID
AA1112906X
Publisher
島根大学生物資源科学部
Publisher Aalternative
Shimane University, Faculty of Life and Environmental Science
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
1-12+ / 1996-2007
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