[Quality prediction model of greenhouse standard cut chrysanthemum based on light-temperature effect].
Based on the effects of light and temperature on chrysanthemum quality and the experiments with different chrysanthemum varieties and planting dates, a quality prediction model of greenhouse standard cut chrysanthemum with the physiological product of thermal effectiveness and PAR (PTEP) as the measurement scale was developed and validated. The results showed that the predicted results, including the number of unfolding leaves, leaf area, plant height, stem diameter, internode length and flower diameter, accorded well with the observed ones, and the determination coefficient (R2) and relative prediction error (RSE) based on 1 : 1 line were 0.99, 0.98, 0.98, 0.92, 0.87 and 0.88, and 5.5%, 6.5%, 5.9%, 4.1%, 11.2%, 12.4%, respectively. This model was of high precision and practicable, which could be used in optimizing the light and temperature management for greenhouse standard cut chrysanthemum production.
Yang
Zai-Qiang
ZQ
College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China. yzq668668@yahoo.com.cn
Luo
Wei-Hong
WH
Chen
Fa-Di
FD
Gu
Jun-Jie
JJ
Li
Xiang-Mao
XM
Ding
Qi-Feng
QF
Zhao
Cai-Biao
CB
Lu
Ya-Fan
YF
D031202:Chrysanthemum / Q000254:growth & development*; D004780:Environment, Controlled; D008027:Light; D008962:Models, Theoretical; D011786:Quality Control; D013696:Temperature