Results 11 to 20 of about 1,510 (159)

Methodologies and Considerations in Evaluating Heat Stress Response and Thermotolerance of Pollen Grains. [PDF]

Physiol Plant
ABSTRACT Elevated temperatures severely disrupt pollen function, posing a major threat to agricultural productivity. While research into pollen thermotolerance is rapidly expanding, the quest to identify and develop heat‐tolerant crops is challenged by a lack of consistent methodological considerations and experimental design principles.
Miller G, Frencken M, Sapeta H, Gidding F, Geelen D, Kumar P, Rieu I, Lieberman-Lazarovich M.   +7 more
europepmc   +2 more sources

Comparative insights into molecular pathways influencing germline development in early-divergent angiosperms. [PDF]

Plant J
SUMMARY The molecular and genetic mechanisms regulating female germline development remain largely unknown in basal and early‐divergent angiosperms. This contrasts with recent progress in model eudicots such as Arabidopsis thaliana and monocots, such as rice, barley, and maize. In this study, we investigate the genetic pathway governing female germline
Lora J, Tucker MR, Shirley NJ, Ma C, Hormaza JI.   +4 more
europepmc   +2 more sources

Polyamines in Pollen: From Microsporogenesis to Fertilization [PDF]

Frontiers in Plant Science, 2016
The entire pollen life span is driven by polyamine (PA) homeostasis, achieved through fine regulation of their biosynthesis, oxidation, conjugation, compartmentalization, uptake, and release. The critical role of PAs, from microsporogenesis to pollen-pistil interaction during fertilization, is suggested by high and dynamic transcript levels of PA ...
ALOISI, IRIS, Cai, Giampiero, SERAFINI FRACASSINI, DONATELLA, DEL DUCA, STEFANO   +3 more
openaire   +6 more sources

Microgametophyte Development in Cannabis sativa L. and First Androgenesis Induction Through Microspore Embryogenesis

Frontiers in Plant Science, 2021
Development of double haploids is an elusive current breeding objective in Cannabis sativa L. We have studied the whole process of anther and pollen grain formation during meiosis, microsporogenesis, and microgametogenesis and correlated the different ...
Alberto Galán-Ávila, Edgar García-Fortea, Jaime Prohens, Francisco Javier Herraiz   +3 more
doaj   +1 more source

Patterns of amyloplast distribution during microsporogenesis in Tradescantia, Impatiens and Larix

Acta Societatis Botanicorum Poloniae, 2014
During the meiotic prophase I in Tradescantia and Impatiens microsporocyte becomes temporarily asymmetric, with excentrically situated nucleus and all amyloplasts gathered in a dense group close to the nuclear envelope..
Bohdan Rodkiewicz, Krystyna Kudlicka, Halina Stobiecka   +2 more
doaj   +1 more source

The development rhythm of the flower-bud in some Papilionaceae species. Part II. Microsporogenesis, macrosporogenesis and early gametogenesis in Pisum sp. forms against the background of bud development

Acta Societatis Botanicorum Poloniae, 2015
The process of microsporogenesis and development of pollen grains was found to occur in an identical rhythm in 14 examined forms of Pisum sp. as compared with the development of the perianth. In the 3 forms studied in detail: Pisum sativum L.
W. Wojciechowska
doaj   +1 more source

Microsporogenesis in Monocotyledons [PDF]

Annals of Botany, 1999
This paper critically reviews the distribution of microsporogenesis types in relation to recent concepts in monocot systematics. Two basic types of microsporogenesis are generally recognized: successive and simultaneous, although intermediates occur.
openaire   +1 more source

Microsporogenesis of peach (Prunus persica L. Batsch) varieties

International Journal of Horticultural Science, 2002
Bud dormancy during winter is a critical factor in peach production in Hungary. The yield is determined basically by the survival rate of flower buds during winter frosts and by their ability to develop normal floral organs.
L. Szalay, B. Timon, Z. Szabó, J. Papp
doaj   +1 more source

Disturbances in microsporogenesis and pollen grain development in Gagea lutea (L.) Ker. Gaw.

Acta Agrobotanica, 2012
The meiotic division of microsporocytes and pollen grain development in Gagea lutea (L.) Ker.-Gaw. (Liliaceae) with fluorescence microscope (excitation light 400 nm) was observed after squashing the anthers in DAPI solution (fluorochrom dying DNA). Up to
Ewa Szczuka, Jerzy Bohdanowicz, Joanna Świerczyńska, Jolanta Sobieska, Jacek Pietrusiewicz   +4 more
doaj   +1 more source

Editing of ORF138 restores fertility of Ogura cytoplasmic male sterile broccoli via mitoTALENs. [PDF]

Plant Biotechnol J
Summary Cytoplasmic male sterility (CMS), encoded by the mitochondrial open reading frames (ORFs), has long been used to economically produce crop hybrids. However, the utilization of CMS also hinders the exploitation of sterility and fertility variation in the absence of a restorer line, which in turn narrows the genetic background and reduces ...
Xu F, Su T, Zhang X, Qiu L, Yang X, Koizuka N, Arimura SI, Hu Z, Zhang M, Yang J.   +9 more
europepmc   +2 more sources