scholarly journals Tree architecture, light interception and water use related traits are controlled by different genomic regions in an apple tree core collection

2022 ◽  
Author(s):  
Aude Coupel‐Ledru ◽  
Benoît Pallas ◽  
Magalie Delalande ◽  
Vincent Segura ◽  
Baptiste Guitton ◽  
...  
Keyword(s):  
Water Use ◽  
Core Collection ◽  
Apple Tree ◽  
Light Interception ◽  
Tree Architecture ◽  
Genomic Regions

Bunchgrass architecture, light interception, and water-use efficiency: assessment by fiber optic point quadrats and gas exchange

Oecologia ◽  
1983 ◽  
Vol 59 (2-3) ◽  
pp. 178-184 ◽  
Author(s):  
M. M. Caldwell ◽  
T. J. Dean ◽  
R. S. Nowak ◽  
R. S. Dzurec ◽  
J. H. Richards
Keyword(s):  
Gas Exchange ◽  
Water Use Efficiency ◽  
Water Use ◽  
Fiber Optic ◽  
Light Interception ◽  
Efficiency Assessment ◽  
Use Efficiency

Water use and light interception under Palmer amaranth (Amaranthus palmeri) and corn competition

Weed Science ◽  
2003 ◽  
Vol 51 (4) ◽  
pp. 523-531 ◽  
Author(s):  
Rafael A. Massinga ◽  
Randall S. Currie ◽  
Todd P. Trooien
Keyword(s):  
Water Use ◽  
Light Interception ◽  
Palmer Amaranth ◽  
Amaranthus Palmeri

Dissecting apple tree architecture into genetic, ontogenetic and environmental effects: QTL mapping

2008 ◽  
Vol 5 (1) ◽  
pp. 165-179 ◽  
Author(s):  
Vincent Segura ◽  
Charles-Eric Durel ◽  
Evelyne Costes
Keyword(s):  
Qtl Mapping ◽  
Environmental Effects ◽  
Apple Tree ◽  
Tree Architecture

Apple tree canopy development and photosynthesis as affected by rootstock

1991 ◽  
Vol 69 (2) ◽  
pp. 295-300 ◽  
Author(s):  
Ido Schechter ◽  
D. C. Elfving ◽  
J. T. A. Proctor
Keyword(s):  
Malus Domestica ◽  
Apple Tree ◽  
Net Photosynthesis ◽  
Light Interception ◽  
Tree Canopy ◽  
Seasonal Development ◽  
Hemispherical Photography ◽  
Canopy Development ◽  
Leaf Type ◽  
Malus Domestica Borkh

Trees of apple (Malus domestica Borkh.) with 'Starkspur Supreme Delicious' as the scion grafted on nine different rootstocks (Ottawa 3, M.7 EMLA, M.9 EMLA, M.26 EMLA, M.27 EMLA, M.9, MAC-9, MAC-24, OAR 1) were studied in their 8th and 9th years. Canopy seasonal development and its light interception followed by fisheye (hemispherical) photography showed that rootstock affected the amount of structural wood, the rate of canopy development, and final leaf area. However, rootstock did not affect the sigmoidal pattern of canopy development. Light interception was linearly correlated with tree dimensions and yield. Leaf net photosynthesis (Pn) of trees on dwarfing rootstocks tended to be lower than Pn rates of trees on more vigorous rootstocks. Rootstock did not affect the scion Pn response to different illumination levels. Shoot leaves, spur leaves on spurs without fruit (S − F), and spur leaves on spurs with fruit (S + F) from trees on M.26 EMLA and OAR 1 showed no differences in Pn rates. However, for both rootstocks, shoot leaves had the highest Pn rate, S + F the lowest, and S − F leaves had intermediate values. Key words: light interception, fisheye photography, leaf type.

Influence of row spacing on water use and yield of rain-fed wheat (Triticum aestivum L.) in a no-till system with stubble retention

2010 ◽  
Vol 61 (11) ◽  
pp. 892 ◽  
Author(s):  
S. G. L. Kleemann ◽  
G. S. Gill
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Vegetative Growth ◽  
Growing Season ◽  
Light Interception ◽  
Row Spacing ◽  
Spike Density ◽  
Stubble Retention ◽  
Use Efficiency

A 3-year field study was undertaken to investigate the effect of row spacing on vegetative growth, grain yield and water-use efficiency of wheat. All 3 years of the study experienced 21–51% below-average rainfall for the growing season. Widening row spacing led to reduced biomass and tillers on per plant basis which could be related to the reduction in light interception by the wheat canopy in the wide rows which in turn could have reduced assimilate production. Reduction in vegetative growth in 54-cm rows translated into a significant reduction in grain yield which was strongly associated (r2 = 0.71) with the loss of spike density. The pattern of crop water use (evapotranspiration, ET) during the growing season was very similar for the three row-spacing treatments. However, there was some evidence for slightly lower ET (~5%) in 54-cm rows in two growing seasons. More importantly, there was no evidence for increased ET during the post-anthesis phase in wide rows as has been speculated by some researchers. Over the 3 years of the study, grain yield declined by 5–8% as row spacing increased from 18 to 36 cm and by a further 12–20% as row spacing increased from 36 to 54 cm. There was a consistent decline in water-use efficiency for grain (WUEG) with increasing row spacing over the 3 years. WUEG declined by 6–11% as crop spacing increased from 18 to 36 cm and declined further by 12–15% as row spacing increased to 54 cm. Lower light interception at wider row spacing could have reduced assimilate production by wheat as well as increased soil evaporation due to lower shading of the soil surface in more open canopies. Growers adopting wider row spacing on these relatively heavy textured soils are likely to experience some reduction in grain yield and WUEG. However, some growers may be prepared to accept a small yield penalty from intermediate row spacing as a trade-off for increased stubble retention and soil health.

Finding genomic regions and candidate genes governing water use efficiency in rice

2016 ◽  
Vol 60 (4) ◽  
pp. 757-766
Author(s):  
V. Roja ◽  
S. Patil ◽  
D. A. Deborah ◽  
A. Srividhya ◽  
N. Ranjitkumar ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Candidate Genes ◽  
Water Use ◽  
Use Efficiency ◽  
Genomic Regions
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