Germination of recalcitrant Baccaurea ramiflora seeds

Abstract

Tolerance to desiccation in recalcitrant seeds depends on the genetic background and the developmental conditions of the seeds, both of which are relevant to harvest and storage for conservation purposes. The tropical south and south-east Asian species, Baccaurea ramiflora Lour., has recalcitrant seeds and is a locally important resource. We measured germination success and desiccation tolerance of B. ramiflora at different temperatures and light conditions for 76, 86, 96, and 106 days after anthesis to describe seed germination requirements and the relationship between seed development and desiccation tolerance of seeds for storage. We found that light is not an important factor in B. ramiflora seed germination, and that optimal seed germination conditions occur at 30/20°C. During their development from 76-106 days after anthesis, seeds and their embryonic axes undergo changes in morphological characteristics, germination ability, moisture content, and desiccation tolerance. The best time for collection of B. ramiflora seeds for storage is around 96 days after anthesis, when desiccation tolerance is maximal.

Establishment of post-harvest early-developmental categories for viability maintenance of Araucaria angustifolia seeds

“…Studies on the metabolism of recalcitrant seeds have been performed by several authors (Barbedo & Bilia 1998;Song et al 2003;Berjak & Pammenter 2008;Caccere et al 2013;Pammenter & Berjak 2014;Walters 2015), including studies on ex situ conservation by storage (Pammenter et al 1994;Drew et al 2000;Li & Pritchard 2009;Pasquini et al 2012;Charloq et al 2013;Walters et al 2013;Bonjovani & Barbedo 2014;Liu et al 2014). Storage of recalcitrant seeds under desiccating conditions resulted in the initiation of subcellular damage, which may be repaired when seeds are set-out to germinate (Farrant et al 1989;Tarquis & Bradford 1992).…”

Metallofullerenol Inhibits Cellular Iron Uptake by Inducing Transferrin Tetramerization

“…Cancer remains as a major threat to human health worldwide. The rapidly developing nanotechnology is revitalizing the current cancer diagnosis and treatment due to the unique physicochemical properties of nanomaterials. The endohedral metallofullerenol compound Gd@C 82 (OH) 22 has been found to efficiently suppress tumor growth and metastasis with negligible toxicity.…”

Geographical origin traceability of rice using a FTIR-based metabolomics approach

“…So far, several origin traceability methods of rice, including stable isotope, [3][4][5][6][7][8] organic component fingerprint, [9][10][11] mineral element analysis, [12][13][14][15] near-infrared spectroscopy, [16][17][18][19][20][21] Raman spectroscopy [22][23][24][25][26] and gas chromatography-mass spectrometry, [27][28][29][30][31] have sprung up. As a lossless and rapid analytical method, near-infrared spectroscopy has a broad application prospect in the origin traceability of rice.…”