Results 71 to 80 of about 54,651 (307)

Are leaves optimally designed for self-support? An investigation on giant monocots

open access: yes, 2016
Leaves are the organs that intercept light and create photosynthesis. Efficient light interception is provided by leaves oriented orthogonal to most of the sun rays.
Tadrist, Loic, Texier, Baptiste Darbois
core   +3 more sources

Reinstatement and generic reassignment of Phyllanthus asteranthos Croizat (Phyllanthaceae) based on living plant observations and specimen analysis

open access: yesNordic Journal of Botany, EarlyView.
Phyllanthus asteranthos Croizat has been treated as a synonym of P. pulcher Wall. ex Müll. Arg. (syn. Nymphanthus glaucescens (Miq.) R.W.Bouman) since 1987. Through detailed morphological observations of living plants and critical examinations of type materials and additional specimens, this study revealed that the two taxa are morphologically very ...
Feng Yang   +2 more
wiley   +1 more source

Aphidiinae (Hymenoptera, Braconidae) aphid parasitoids of Malta : review and key to species [PDF]

open access: yes, 2015
This paper brings an annotated list of the 16 aphid parasitoids detected up to 2015 in Malta. All the species were reared from identified aphid-plant associations. An illustrated key to the identification of the recorded species from Malta is provided.
Mifsud, David   +3 more
core   +1 more source

Taxonomic identities of Coelogyne roseans, C. chen‐tsii and C. niana (Coelogyninae, Orchidaceae)

open access: yesNordic Journal of Botany, EarlyView.
The taxonomic identities of Coelogyne roseans (= Pholidota roseans) and C. niana (= P. niana) have long been misunderstood. Our findings indicate that C. chen‐tsii (= P. longipes) is conspecific with C. niana, consequentially C. chen‐tsii is reduced to a synonym of C. niana. Although C. roseans and C.
Nan Shu, Rong Li
wiley   +1 more source

COMPARATIVE MORPHOLOGY AND ANATOMY OF THE LEAF AND STEM OF PEPEROMIA DAHLSTEDTII C.DC., OTTONIA MARTIANA MIQ. AND PIPER DIOSPYRIFOLIUM KUNTH (PIPERACEAE) MORFOLOGIA Y ANATOMIA COMPARATIVA DE LA HOJA Y TALLO DE PEPEROMIA DAHLSTEDTII C.DC., OTTONIA MARTIANA MIQ. Y PIPER DIOSPYRIFOLIUM KUNTH (PIPERACEAE)

open access: yesGayana: Botanica, 2004
The genera and species of Piperaceae show a considerable structural diversity of leaves and especially stems. This paper presents a comparative morphological and anatomical study of the leaves and stems of three common Brazilian species of this family ...
L. A. Souza   +2 more
doaj  

Nutrients Assimilation and Chlorophyll Contents for Different Grapevine Varieties in Calcareous Soils in the Somontano DO (Spain)

open access: yesBeverages, 2018
Lime-induced chlorosis (LIC) is an important abiotic constraint affecting the growth and yield of grapevines growing in calcareous soils in the Mediterranean region, and the sensory properties of the produced wine.
José Casanova-Gascón   +3 more
doaj   +1 more source

Embolism resistance in petioles and leaflets of palms [PDF]

open access: yesAnnals of Botany, 2019
AbstractBackground and aimsHydraulic studies are currently biased towards conifers and dicotyledonous angiosperms; responses of arborescent monocots to increasing temperature and drought remain poorly known. This study aims to assess xylem resistance to drought-induced embolism in palms.MethodsWe quantified embolism resistance via P50 (xylem pressure ...
Emilio, Thaise   +9 more
openaire   +5 more sources

Breynia phuongiana (Phyllanthaceae), a new species from the Central Highlands of Vietnam

open access: yesNordic Journal of Botany, EarlyView.
A new species, Breynia phuongiana (Phyllanthaceae subgen. Sauropus), is described and illustrated from the Central Highlands of Vietnam. It is morphologically similar to B. beillei, B. bonii, and B. thorelii, but differs in having oblong‐elliptic leaves, sepals marked with reddish striations, an androphore exceeding 1 mm in length, and distinctly ...
Van Canh Nguyen   +6 more
wiley   +1 more source

Efek Pretreatment Microwave-NaOH Pada Tepung Gedebog Pisang Kepok terhadap Yield Selulosa

open access: yesAgritech, 2018
Carbon sources in the form of sugar to be converted into bioethanol are rapidly developed, they are so called as the first generation, the second generation, and the third generation. The petiole of banana is the second generation of lignocellulose which
Dewi Maya Maharani, Khulafaur Rosyidin
doaj   +1 more source

Effects of Potassium Source and Secondary Nutrients on Potato Yield and Quality in Southcentral Alaska. [PDF]

open access: yes, 1990
Calcium (Ca), magnesium (Mg), and sulfur (S) are required for the growth and development of all higher plants. They are commonly referred to as secondary nutrients because they are less often limiting to plant growth than the primary nutrients nitrogen ...
Gavlak, Raymond G.   +2 more
core  

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