Results 31 to 40 of about 4,733 (136)

Characteristics of Pollen from Transgenic Lines of Apple Carrying the Exogenous CpTI Gene

Horticultural Plant Journal, 2015
It is fundamental for gene transformation and ecosystem hazard evaluation to study the pollen characteristics of transgenic plants. In this research, the characteristics of pollen from 7- or 8-year-old transgenic apple plants carrying an exogenous CpTI ...
Shi Xiaoxin, Zhou Ruijin, Wang Qianqian, Chang Tengfei, Feng Shasha, Du Guoqiang   +5 more
doaj   +1 more source

Microsporogênese e etapas da ontogenia do gametófito masculino de Tabebuia ochracea (Cham.) Standley (Bignoniaceae) Microsporogenesis and the early male gametophyte development of Tabebuia ochraceae (Cham.) Standley (Bignoniaceae)

Acta Botânica Brasílica, 1996
Foram analisadas as etapas da ontogenia do gametófito masculino e da parede da antera de Tabebuia ochracea. O método de formação da parede do microsporângio é do tipo Dicotiledôneo.
Nelson S. Bittencourt Jr
doaj   +1 more source

“Hands‐On” white matter anatomy: Using Air Anatomy gestures and tractography on simple brain sections to enhance teaching of white matter directions

Anatomical Sciences Education, EarlyView.
Abstract Teaching white matter (WM) anatomy to undergraduates is challenging. This is partly because WM fibers are oriented intricately and Klingler's dissection, the gold standard method used to demonstrate it, often requires time, advanced anatomical knowledge, and refined dissection skills.
Doris George Yohannan, Rohini Punja, Thomas Iype, Chandrasekharan Kesavadas, Bejoy Thomas, Kannanvilakom Govindapillai Umesan, Aswathy Maria Oommen, Usha Devi Keezhathil Bhargavi   +7 more
wiley   +1 more source

Autophagy-mediated degradation of integumentary tapetum is critical for embryo pattern formation

Nature Communications
Autophagy modulates the degradation and recycling of intracellular materials and contributes to male gametophyte development and male fertility in plants. However, whether autophagy participates in seed development remains largely unknown.
Lin-lin Zhao, Ru Chen, Ziyu Bai, Junyi Liu, Yuhao Zhang, Yicheng Zhong, Meng-xiang Sun, Peng Zhao   +7 more
doaj   +1 more source

ABSENCE OR PRESENCE OF TAPETUM LUCIDUM: MACRO AND MICROSCOPIC INVESTIGATIONS IN DONKEY (EQUUS ASINUS), CAT (FELIS DOMESTICA) AND ONE-HUMPED CAMEL (CAMELUS DROMEDARIUS)

Slovenian Veterinary Research, 2018
For explanation eye-shine phenomenon, we used both eyes of five healthy adult donkeys (Equus asinus), cats (Felis domestica) and one-humped camels (Camelus dromedarius).
Hanaa M. El-Ghazali, Eman A.A. Mahdy
doaj   +1 more source

Documenting the Sporangium Development of the Polypodiales Fern Pteris multifida

Frontiers in Plant Science, 2022
Reconstructing the development of sporangia in seed-free vascular plants provides crucial information about key processes enabling the production of spores that are important in the life cycle of these plants.
Nai-Ying Yang, Xin-Lei Jia, Chang-Xu Sui, Shi-Yi Shen, Xi-Ling Dai, Jing-Shi Xue, Zhong-Nan Yang   +6 more
doaj   +1 more source

A revised classification system of the marronoid clade of spiders (Araneae), based on dense sampling phylogenomics and comparative morphology

Cladistics, EarlyView.
Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff, Michael B. J. Kelly, Franklyn Cala‐Riquelme, Jacob A. Gorneau, Katherine O. Montana, Helen M. Smith, Phil J. Sirvid, Cor J. Vink, Lauren A. Esposito, Martín J. Ramírez, Charles E. Griswold   +10 more
wiley   +1 more source

Potential Association of Reactive Oxygen Species With Male Sterility in Peach

Frontiers in Plant Science, 2021
Male sterility is an important agronomic trait for hybrid vigor utilization and hybrid seed production, but its underlying mechanisms remain to be uncovered.
Yaming Cai, Yaming Cai, Yaming Cai, Zhishen Ma, Collins Otieno Ogutu, Collins Otieno Ogutu, Lei Zhao, Lei Zhao, Lei Zhao, Liao Liao, Liao Liao, Beibei Zheng, Beibei Zheng, Ruoxi Zhang, Ruoxi Zhang, Lu Wang, Lu Wang, Lu Wang, Yuepeng Han, Yuepeng Han, Yuepeng Han   +20 more
doaj   +1 more source

Giants in the cold: Morphological evidence for vascular heat retention in the viscera but not the skeletal muscle of the basking shark (Cetorhinus maximus)

Journal of Fish Biology, EarlyView.
Abstract Fewer than 50 of the over 30,000 extant species of fishes have developed anatomical specializations facilitating endothermy in specific body regions. The plankton‐feeding basking shark (Cetorhinus maximus), traditionally classified as an ectotherm, was recently shown to have regionally endothermic traits such as centralized red muscle (RM ...
C. Antonia Klöcker, Axel Schlindwein, Martin C. Arostegui, Ingrid M. Bruvold, Joel V. Wernström, Montserrat Martin‐Armas, David W. Sims, Nicolas Straube, Andreas Altenburger, Claudia Junge   +9 more
wiley   +1 more source

Morphological and ultrastructural variations in Scliizjaea pectinata (Schizaeaceae: Pteridophyta)

Bothalia: African Biodiversity & Conservation, 1994
Schizaea pectinata (L.) Sw. was collected from the extreme ends of its geographical range in South Africa for a study of sporangial development, sporogenesis and tapetal organisation.
B. M. Parkinson
doaj   +1 more source