The sizes and shapes (physiognomy) of fossil leaves are widely applied as proxies for paleoclimatic and paleoecological variables. However, significant improvements to leaf-margin analysis, used for nearly a century to reconstruct mean annual temperature (MAT), have been elusive; also, relationships between physiognomy and many leaf ecological variables have not been quantified. Using the recen...

ABSTRACT: Leaf area is an important growth variable in agricultural crops and the leaf main of interest tobacco industry. So, aim this scientific research was to estimate Burley by linear dimensions leaves determine which mathematical model more adequate for purpose. Two experiments were carried out with tobacco, cultivar DBH 2252, 2016/2017 2018/2019 years, respectively, municipalities Itaqui ...

The breeding of wheat with greater early vigour has potential to increase water- and nutrient-use efficiency, as well as to improve weed competitiveness to raise crop yields profitably. Given that wheat is inherently conservative in its early growth, a sustained breeding effort was initiated to increase genetically seedling leaf area in developing novel high vigour germplasm. A recurrent select...