Constant Extension Rate Testing and Predictions of In-Service Behavior: The Effect of Specimen Dimensions

2009 ◽  
pp. 355-355-12
Author(s):  
MR Louthan ◽  
WC Porr
Keyword(s):  
Extension Rate ◽  
Rate Testing ◽  
Service Behavior

Constant extension rate testing of IN625LCF in molten nitrate salt

1999 ◽  
Vol 41 (6) ◽  
pp. 1119-1137 ◽  
Author(s):  
S.H Goods ◽  
R.W Bradshaw
Keyword(s):  
Extension Rate ◽  
Nitrate Salt ◽  
Rate Testing

A Study on Network Service Behavior Verification with Process Algebra and Its Application

2011 ◽  
Vol 34 (9) ◽  
pp. 1660-1668
Author(s):  
Fu CHEN ◽  
Jia-Hai YANG ◽  
Yang YANG ◽  
Yuan-Zhuo WANG ◽  
Mei-Ying JIA
Keyword(s):  
Process Algebra ◽  
Network Service ◽  
Service Behavior

scholarly journals Two maize cultivars of contrasting leaf size show different leaf elongation rates with identical patterns of extension dynamics and coordination

AoB Plants ◽  
2021 ◽  
Author(s):  
Tiphaine Vidal ◽  
Hafssa Aissaoui ◽  
Sabrina Rehali ◽  
Bruno Andrieu
Keyword(s):  
Genotypic Variation ◽  
Leaf Size ◽  
High Rate ◽  
Time Interval ◽  
Extension Rate ◽  
Leaf Production ◽  
Maize Cultivars ◽  
Plant Environment ◽  
The Difference ◽  
Leaf Extension

Abstract Simulating leaf development from initiation to maturity opens new possibilities to model plant–environment interactions and the plasticity of plant architecture. This study analyses the dynamics of leaf production and extension along a maize (Zea mays) shoot to assess important modelling choices. Maize plants from two cultivars originating from the same inbred line, yet differing in the length of mature leaves were used in this study. We characterised the dynamics of the blade and sheath lengths of all phytomers by dissecting plants every 2–3 days. We analysed how differences in leaf size were built up and we examined the coordination between the emergence of organs and phases of their extension. Leaf extension rates were higher in the cultivar with longer leaves than in the cultivar with shorter leaves; no differences were found in other aspects. We found that (i) first post-embryonic leaves were initiated at a markedly higher rate than upper leaves; (ii) below ear position, sheaths were initiated at a time intermediate between tip emergence and appearance, while above the ear position, sheaths were initiated at a high rate, such that the time interval between the blade and sheath initiations decreased for these leaves; and (iii) ear position also marked a change in the correlation in size between successive phytomers with little correlation of size between upper and lower leaves. Our results identified leaf extension rate as the reason for the difference in size between the two cultivars. The two cultivars shared the same pattern for the timing of initiation events, which was more complex than previously thought. The differences described here may explain some inaccuracies reported in functional-structural plant models. We speculate that genotypic variation in behaviour for leaf and sheath initiation exists, which has been little documented in former studies.

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