نتایج جستجو برای: endocarp
تعداد نتایج: 248 فیلتر نتایج به سال:
Saure Carhoxypeptidase, welche Phenylalanin von CbO-Leu-Phe-OH bei pH 5,3 abspaltet, ist ein in höheren Angiospermen weit verbreitetes Enzym. Es scheint dagegen in primitiven Angiospermen (Fagus und Magnolia) sowie in Gymnospermen und Kryptogamen (Ausnahme: Equisetum) zu fehlen. Bei Zitrone ist die Aktivität saurer Carboxypeptidase von Natur und Alter der extrahierten Gewebe abhängig (Exocarp u...
BACKGROUND Cornaceae consists of 58 species, all within the genus Cornus. The Cenozoic record of Cornus is extensive and well documented. Molecular divergence-time studies suggest that crown-group Cornus may have originated by the Late Cretaceous. However, there has been no formal report of Cornus from Cretaceous deposits. Here, we characterize a permineralized fossil fruit assignable to Cornus...
Morphological, structural and developmental features of fruits and seeds of Vismia guianensis (Aubl.) Choisy. are here presented, with the purpose to elucidate their structure and to contribute to taxonomical and ecological studies of the family. The fruit is a berry and the "rind" is constituted by the exocarp and by the subepidermal layers which constitute the mesocarp. The reddish pulp, rich...
How mechanical and biological processes are coordinated across cells, tissues, and organs to produce complex traits is a key question in biology. Cardamine hirsuta, a relative of Arabidopsis thaliana, uses an explosive mechanism to disperse its seeds. We show that this trait evolved through morphomechanical innovations at different spatial scales. At the organ scale, tension within the fruit wa...
The objective of this work was to evaluate the carbonization yield of babassu nutshell as affected by final temperature, as well as the energy losses involved in the process. Three layers constituting the babassu nut, that is, the epicarp, mesocarp and endocarp, were used together. The material was carbonized, considering the following final temperatures: 450, 550, 650, 750, and 850°C. Th...
This study evaluated the contributions of Styrax camporum seed morphology (size of seeds, presence or absence of endocarp attached to the seed), different substrates (filter paper, vermiculite, sand and the soils of cerrado s. str., cerradão and a riparian forest), different water potentials (0, -0.1, -0.2, -0.3, -0.4 and -0.5 MPa), light and temperature to seed germination. Seed size did not a...
Seeds of the palm Attalea butyracea (formerly known as Scheelea zonensis in Panamá and Scheelea rostrata in Costa Rica—Bradford & Smith 1977, Forget et al. 1994, Henderson 1995) are contained within stony endocarps. For the purposes of this paper, individual fruits or their seed-bearing endocarps will be referred to as diaspores; all of the seeds of a given fruit are surrounded by the stony wal...
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