Results 61 to 70 of about 2,555 (213)

Floral morphology and anther development in diandrous orchid Paphiopedilum purpuratum with their taxonomic implications

Guangxi Zhiwu
The taxonomy of Paphiopedilum Pfitz. has been disputed and needs more data for clarification. Floral morphology and anther development in P. purpuratum were observed using microscope and paraffin section. The results were as follows: (1) It was supported
ZHU Yong, HUANG Jialin, TAO Kaifeng, WANG Yuecheng, ZHANG Jin, LI Lu   +5 more
doaj   +1 more source

Molecular-cytogenetic analysis of triticale and wheat lines with introgressions of the tribe Triticeae species genetic material

Вавиловский журнал генетики и селекции, 2015
There are a number of problems in selection of cultivated cereals associated with the requirements to create forms with resistance to diseases, pests and unfavorable environmental conditions.
O. A. Orlovskaya, I. N. Leonova, I. G. Adonina, E. A. Salina, L. V. Khotyleva, V. K. Shumny   +5 more
doaj   +1 more source

International Biological Flora: Ceratonia siliqua

Journal of Ecology, Volume 112, Issue 8, Page 1885-1922, August 2024.
The carob tree (Ceratonia siliqua) has a long traditional history in Mediterranean cultures providing food for humans and domestic animals. Its remarkable tolerance of drought, salt and fire, with an ability to thrive in poor, dry soils, makes it ideal for a warming Mediterranean climate.
Peter A. Thomas, Xavier Garcia‐Martí, Tarek A. Mukassabi, Joan Tous   +3 more
wiley   +1 more source

Actin filaments drive spindle positioning in Arabidopsis meiosis II

New Phytologist, Volume 248, Issue 5, Page 2187-2191, December 2025.
Yingrui Ma, Hua Jiang
wiley   +1 more source

Why are the inner and outer sides of many flower petals differently coloured?

Plant Biology, Volume 26, Issue 5, Page 665-674, August 2024.
Evolutionary hypotheses aimed at explaining why inner and outer sides of petals are often differently coloured. Abstract The flower perianth has various, non‐mutually exclusive functions, such as visual signalling to pollinators and protecting the reproductive organs from the elements and from florivores, but how different perianth structures and their
X.‐Q. Fan, J. Trunschke, Z.‐X. Ren, H. Wang, G. H. Pyke, C. J. van der Kooi, K. Lunau   +6 more
wiley   +1 more source

Antisense inhibition of a tomato meiotic proteinase suggests functional redundancy of proteinases during microsporogenesis

, 2001
Anther development in angiosperms culminates in the programmed cell death of specific tissues to facilitate the release of pollen. Despite a wealth of morphological descriptions of this process, there have been few reports on the regulation of ...
C Daniel Riggs, Rhoda DeGuzman, Andrew A Taylor, Katherine Zeman, Annette Rzepczyk   +4 more
core   +1 more source

Esterilidade de espiguetas e produção de grãos de genótipos de arroz irrigado submetidos a baixas temperaturas na microsporogênese

Agropecuária Catarinense, 2019
Resumo - Baixas temperaturas reduzem o rendimento do arroz, especialmente quando ocorrem na microsporogênese da cultura. Este trabalho objetivou identificar genótipos tolerantes ao estresse ocasionado pelo frio na microsporogênese.
Francieli Weber Stürmer, Rubens Marschalek, Luis Sangoi, Natalia Maria de Souza   +3 more
doaj   +1 more source

The male germ unit association is independently regulated of GUM in Arabidopsis thaliana

Plant Direct, Volume 8, Issue 7, July 2024.
Abstract Cytoplasmic projections (CPs) formed by the generative and sperm cells link the male gametes with the vegetative cell (VC) nucleus, which are required to build the male germ unit (MGU) assemblage in the angiosperm pollen grain. As molecular and genetic controls underlying CP development and formation of the MGU are unknown, it was hypothesized
Abdur Rauf, Anbang Wang, Yujia Li, Zhihao Lian, Shouxing Wei, Kashmala Jabbar, Muhammad Wisal, Ikramullah Khan, Muhammad Khalid, Jingyang Li   +9 more
wiley   +1 more source

Microsporogenesis in Torreya californica.

, 1974
Microsporangial development in angiosperms is a well documented process. In contrast, difficulties such as availability of material, prolonged development, and problems in sectioning have made information concerning microsporogenesis in gymnosperrns ...
Medeiros, Joseph.
core  

Cytogenetic studies in the Eragrostis curvula Complex

Bothalia: African Biodiversity & Conservation, 1977
Cytogenetic studies were undertaken in the  Eragrostis curvula Complex. Three plants were studied at each of 16 collecting points. The overall morphology and embryo sac development of all plants were evaluated, while the chromosome number and ...
T. B. Vorster
doaj   +1 more source