scholarly journals Leaf Morphological Traits of then Shrub Species at the Tamaulipan Thorn Scrub

2016 ◽  
Vol 7 (2) ◽  
pp. 344-349 ◽  
Author(s):  
Perla Cecilia Rodriguez Balboa ◽  
◽  
Humberto Gonzalez Rodriguez ◽  
Israel Cantu Silva ◽  
Artemio Carrillo Parra ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Shrub Species ◽  
Leaf Morphological Traits

Leaf damage by Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) and its relation to leaf morphological traits in maize landraces and commercial cultivars

2019 ◽  
Vol 127 (1) ◽  
pp. 103-109
Author(s):  
Luis F. Conceição dos Santos ◽  
Esaú Ruiz-Sánchez ◽  
Rubén H. Andueza-Noh ◽  
René Garruña-Hernández ◽  
Luis Latournerie-Moreno ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Morphological Traits ◽  
Leaf Damage ◽  
Commercial Cultivars ◽  
Maize Landraces ◽  
Lepidoptera Noctuidae ◽  
Leaf Morphological Traits

scholarly journals Variation in Leaf Morphological Traits of European Beech and Norway Spruce Over Two Decades in Switzerland

2022 ◽  
Vol 4 ◽  
Author(s):  
Joachim Zhu ◽  
Anne Thimonier ◽  
Sophia Etzold ◽  
Katrin Meusburger ◽  
Peter Waldner ◽  
...  
Keyword(s):  
Norway Spruce ◽  
Morphological Traits ◽  
European Beech ◽  
Temporal Analysis ◽  
Legacy Effects ◽  
Term Trend ◽  
Long Term Trend ◽  
Needle Mass ◽  
Leaf Morphological Traits

Leaf morphological traits (LMTs) of forest trees have been observed to vary across space and species. However, long-term records of LMTs are scarce, due to a lack of measurements and systematic leaf archives. This leaves a large gap in our understanding of the temporal dynamics and drivers of LMT variations, which may help us understand tree acclimation strategies. In our study, we used long-term LMT measurements from foliar material collections of European beech (Fagus sylvatica) and Norway spruce (Picea abies), performed every second year from 1995 to 2019 on the same trees within the Swiss Long-term Forest Ecosystem Research Program LWF. The 11 study plots (6 beech, 4 spruce, and 1 mixed) are distributed along gradients of elevation (485–1,650 m a.s.l.), mean annual precipitation (935–2142 mm), and mean annual temperature (3.2–9.8°C). The investigated LMTs were (i) leaf or needle mass, (ii) leaf area or needle length, and (iii) leaf mass per area or needle mass per length. We combined this unique data set with plot variables and long-term data on potential temporal drivers of LMT variations, including meteorological and tree trait data. We used univariate linear regressions and linear mixed-effects models to identify the main spatial and temporal drivers of LMT variations, respectively. For beech LMTs, our temporal analysis revealed effects of mast year and crown defoliation, and legacy effects of vapor pressure deficit and temperature in summer and autumn of the preceding year, but no clear long-term trend was observed. In contrast, spruce LMTs were mainly driven by current-year spring conditions, and only needle mass per length showed a decreasing long-term trend over the study period. In temporal models, we observed that LMTs of both species were influenced by elevation and foliar nutrient concentrations, and this finding was partly confirmed by our spatial analyses. Our results demonstrate the importance of temporal analysis for determining less recognized drivers and legacy effects that influence LMTs, which are difficult to determine across space and species. The observed differences in the temporal drivers of beech and spruce LMTs suggest differences in the adaptation and acclimation potential of the two species.

Seasonal change of leaf morphological traits of six broadleaf seedlings in South China

2012 ◽  
Vol 32 (1) ◽  
pp. 123-134 ◽  
Author(s):  
薛立 XUE Li ◽  
张柔 ZHANG Rou ◽  
奚如春 XI Ruchun ◽  
郭淑红 GUO Shuhong ◽  
杨振意 YANG Zhenyi ◽  
...  
Keyword(s):  
Seasonal Change ◽  
South China ◽  
Morphological Traits ◽  
Leaf Morphological Traits

Potential importance of water status traits for durum wheat improvement under Mediterranean conditions

2001 ◽  
Vol 137 (2) ◽  
pp. 139-145 ◽  
Author(s):  
O. MERAH
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Morphological Traits ◽  
Water Status ◽  
Flag Leaf ◽  
Grain Filling ◽  
Dry Matter Partitioning ◽  
Growing Seasons ◽  
Mediterranean Conditions ◽  
Leaf Morphological Traits

Water status traits have been proposed as criteria for drought tolerance improvement in several species especially in bread wheat, oat and barley. In order to test this possibility in durum wheat, in 1995 and 1997, a collection of 144 genotypes from different geographical origins was cultivated under rainfed Mediterranean conditions in Montpellier (southern France). Relative water content (RWC), osmotic potential (OP), as well as leaf morphological traits, grain yield (GY), total above-ground biomass and harvest index (HI) were measured. Large genotypic variations were observed for all traits. Differences between the 2 years were also noticed for all the traits which could be attributed to differences in water availability between the 2 growing seasons. The correlation analysis has revealed significant positive associations between water status traits and both GY and HI within and across years. These results suggest that genotypes which can maintain higher water status and then higher transpiration rates during grain filling, are more efficient in dry matter partitioning to grain and hence higher yield. Heritabilities of water status characters were higher than those of productivity traits. Our results emphasized the value of RWC and OP as criteria for durum wheat grain yield improvement under rainfed Mediterranean conditions. Relationships between RWC, OP and flag leaf morphological traits are also discussed.

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