Results 81 to 90 of about 57,214 (301)
Frontiers in Plant Science, 2017 Proper growth of the pollen tube depends on an elaborate mechanism that integrates several molecular and cytological sub-processes and ensures a cell shape adapted to the transport of gametes.
Iris Aloisi +5 more
doaj +1 more source
Glycosidases in pear pollen tube development [PDF]
, 2017 During the in vitro germination of pear pollen, several hydrolases were released into the medium. They were apparently eluted from the pollen grain, since the activity was the same when germination was inhibited. These enzymes, once released, had no role
Matile, Ph, Rosenfield, C.-L
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Manifold limits on seed production by individual flowering plants
American Journal of Botany, EarlyView.Abstract Premise Historically, angiosperm seed production has been considered to be either pollen or resource limited. However, seed production involves more than pollen and seed resources and typically involves multiple ovules in multiple flowers. Therefore, various constraints may act simultaneously. Methods Proportional components of seed production
Lawrence D. Harder +1 more
wiley +1 more source
Reproductive abnormalities in interspecific crosses involving Gossypium hirsutum and Gossypium arboreum [PDF]
Electronic 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
Frontiers in Plant Science, 2016 Nitric oxide (NO) as a signaling molecule plays crucial roles in many abiotic stresses in plant development processes, including pollen tube growth. Here, the signaling networks dominated by NO during cold stress that inhibited Camellia sinensis pollen ...
Weidong eWang +8 more
doaj +1 more source
Effects of therapeutants and temperature on pollen germination, pollen tube growth and fruit set in fruit crops : a thesis presented in partial fulfilment of the requirements for the degree of Master of Horticultural Science at Massey University [PDF]
, 1980 This study involved assessments of therapeutant effects on pollination and fruit set; of temperature effects on pollen germination and pollen tube growth in apples, peaches and kiwifruits; of flowerage effects on pollen germination and pollen tube growth
Manandhar, Dwarika Narayan
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Significance of autoclaving-induced toxicity from and hydrolysis of carbohydrates in in vitro studies of pollen germination and tube growth [PDF]
, 1989 Autoclaving of various carbohydrates resulted in decreased in vitro pollen germination and/or pollen tube growth in species belonging to different families.
Anagnostakis +10 more
core +1 more source
Ecology and evolution of pyrazines in insects
Biological Reviews, EarlyView.ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk +2 more
wiley +1 more source
Nature Communications, 2021 Arabidopsis pollen contains a vegetative nucleus and two sperm cells that move to the apical region during pollen tube growth. Here, Motomura et al. make use of transgenic pollen with immobilized nuclei and show that, contrary to previous assumptions ...
Kazuki Motomura +7 more
doaj +1 more source
Heteranthery in Clarkia: pollen performance of dimorphic anthers contradicts expectations. [PDF]
, 2019 Premise of the studyWild plant species that require the services of pollen-feeding insects for reliable pollination may evolve features that attract and reward their mutualistic partners.
Buchmann S. L. +4 more
core +1 more source