Results 61 to 70 of about 1,092,047 (407)

Pollen Grain Microscopic Image Classification Using an Ensemble of Fine-Tuned Deep Convolutional Neural Networks [PDF]

open access: yes, 2020
Pollen grain micrograph classification has multiple applications in medicine and biology. Automatic pollen grain image classification can alleviate the problems of manual categorisation such as subjectivity and time constraints. While a number of computer-based methods have been introduced in the literature to perform this task, classification ...
arxiv   +1 more source

The role of diverse LURE-type cysteine-rich peptides as signaling molecules in plant reproduction [PDF]

open access: yes, 2021
In angiosperm sexual reproduction, the male pollen tube undergoes a series of interactions with female tissues. For efficient growth and precise guidance, the pollen tube perceives extracellular ligands.
Takeuchi, Hidenori
core   +1 more source

A Sugar Transporter Takes Up both Hexose and Sucrose for Sorbitol-Modulated In Vitro Pollen Tube Growth in Apple[OPEN]

open access: yesThe Plant Cell, 2019
A sugar transporter protein, STP13a, mediates the uptake of both hexose and Suc for in vitro pollen tube growth in apple, with its expression regulated by sorbitol via a MYB transcription factor.
Chunlong Li   +5 more
semanticscholar   +1 more source

Neglected plant parasites: Mitrastemonaceae

open access: yesPLANTS, PEOPLE, PLANET, Volume 5, Issue 1, Page 5-13, January 2023., 2023
Mitrastemonaceae are a remarkable family of parasitic flowering plants. The two species that make up this family have a disjunct distribution and a peculiar appearance. Both are devoid of roots, stems, and regular leaves and live inside the roots of their host plants for most of their life cycle.
Luiza Teixeira‐Costa, Kenji Suetsugu
wiley   +1 more source

Reproductive abnormalities in interspecific crosses involving Gossypium hirsutum and Gossypium arboreum [PDF]

open access: yesElectronic Journal of Plant Breeding, 2010
A successful cross fertilization involving two different species implies that a chain of reproductive process takes placeunhampered after pollination. The coordination and interaction between genes or gene complexes in the pollen parent andmatching gene ...
S.Saravanan, K. Koodalingam and T.S. Raveendran
doaj  

Quantification of Pollen Viability in Lantana camara By Digital Holographic Microscopy [PDF]

open access: yesarXiv, 2022
Pollen grains represent the male gametes of seed plants and their viability is critical for efficient sexual reproduction in the plant life cycle. Pollen analysis is used in diverse research thematics to address a range of botanical, ecological and geological questions. More recently it has been recognized that pollen may also be a vector for transgene
arxiv  

Glycoprotein composition along the pistil of Malus x domestica and the modulation of pollen tube growth [PDF]

open access: yes, 2014
Background: The characteristics of pollen tube growth are not constant, but display distinct patterns of growth within the different tissues of the pistil.
Herrero, Maria, Losada, Juan M
core   +2 more sources

How pollen tubes grow

open access: yesDevelopmental Biology, 2007
Sexual reproduction of flowering plants depends on delivery of the sperm to the egg, which occurs through a long, polarized projection of a pollen cell, called the pollen tube. The pollen tube grows exclusively at its tip, and this growth is distinguished by very fast rates and reaches extended lengths.
Alexander Krichevsky   +5 more
openaire   +3 more sources

Pollen tube contents from failed fertilization contribute to seed coat initiation in Arabidopsis [version 1; peer review: 2 approved, 1 approved with reservations]

open access: yesF1000Research, 2019
Plant seeds are essential for human beings, constituting 70% of carbohydrate resources worldwide; examples include rice, wheat, and corn. In angiosperms, fertilization of the egg by a sperm cell is required for seed formation; therefore, fertilization ...
Xiaoyan Liu   +2 more
doaj   +1 more source

Smoke-water enhances in vitro pollen germination and tube elongation of three species of Amaryllidaceae [PDF]

open access: yes, 2014
Smoke-water prepared from burning plant material and smoke-derived compounds significantly promote seed germination and enhance growth of many plant species.
Finnie, J.F.   +4 more
core   +1 more source

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