Results 1 to 10 of about 1,617 (146)

Cryoimmobilized anther analysis reveals new ultrastructural insights into Rhynchospora (Cyperaceae) asymmetrical microsporogenesis [PDF]

Frontiers in Plant Science
IntroductionThe Cyperaceae family is distinguished by holocentric chromosomes and a distinctive microsporogenesis process, which includes inverted meiosis, asymmetric tetrad formation, selective cell death, and the formation of pseudomonad pollen ...
Danilo M. Rocha, Ulla Neumann, Fernanda M. Nogueira, Georgios Tsipas, André L. L. Vanzela, André Marques   +5 more
doaj   +2 more sources

Engineering a Gibberellin-Switchable Dual-Use Line Based on Ent-Kaurene Oxidase Gene ZmKO1 Enables Two-Line Hybrid Seed Production in Maize. [PDF]

Plant Biotechnol J
ABSTRACT Male‐sterile systems are pivotal for maize hybrid seed production, yet existing systems are constrained by significant limitations. Here, we identified a novel single‐gene‐controlled recessive genic male sterility (GMS) mutant, defective in filament elongation 1 (def1), which exhibits non‐elongated filaments, unopened glumes, and non‐exserted ...
Li C, Wang S, Xiang Y, Yu T, Wei R, Mei W, Liu X, Yuan P, Yi H, Zhou S, Xia C, Cao M, Lan H.   +12 more
europepmc   +2 more sources

Molecular insights and translational opportunities to enhance heat tolerance in rice. [PDF]

Plant Genome
Abstract Heat stress is an increasingly serious threat to rice (Oryza sativa L.) productivity, yet the genetic and regulatory architecture underlying thermotolerance remain poorly resolved and fragmented across studies. Earlier research focused on individual pathways or specific developmental stages; however, recent advances now support an integrated ...
Rana P, Chaudhary C, Pruthi R, Sharma M, Singh B, Kondi RKR, Bulle M, Subudhi PK.   +7 more
europepmc   +2 more sources

The incredible vulnerability that reproduction poses for plant species in a warming world. [PDF]

New Phytol
Generalized plant responses to heat stress across whole‐plant and reproductive scales. Summary Temperatures are rising globally and threatening the persistence of natural plant populations. Elevated temperatures disrupt gametogenesis, fertilization, and seed filling, often at lower thresholds than those affecting photosynthesis, growth, or survival ...
Denney DA, Taylor AL, Josephs EB, Willis JH, Lowry DB.   +4 more
europepmc   +2 more sources

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

Microsporogenesis and Pollen Morphology of Triploid and Tetraploid Rubber Trees (Hevea brasiliensis) [PDF]

Plants
Polyploidy plays a key role in plant evolution and breeding, but the reproductive biology of polyploid rubber trees (Hevea brasiliensis) remains poorly understood.
Qiongxia He, Yujia Sun, Xu Wang, Xin Dong, Hongli Yang, Xiao Huang, Weiguo Li, Peng Qu, Huasun Huang, Yuanyuan Zhang   +9 more
doaj   +2 more sources

Evaluation of the course of microsporogenesis in some selected peach (Prunus persica L./Batsch) cultivars [PDF]

Acta Agriculturae Serbica, 2014
The evaluation of the microsporogenesis process was performed from January to April within the period of 2011-2013. The experiment involved 15 peach cultivars and the control cultivar Redhaven. The course of microsporogenesis was evaluated on the base of
Horsáková Jana, Krška Boris
doaj   +1 more source

Evaluation of mitotic activity in tapetal cells of grapevine (Vitis L.)

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2021
The knowledge with reference to the grapevine tapetum has been centered on its anatomy/morphology and hardly anything at all is known about its mitotic activity throughout the microsporogenesis. The aim of this study was to ascertain the mitotic activity
Neiva Izabel PIEROZZI, Mara FERNANDES MOURA   +1 more
doaj   +1 more source

Flower bud development of almond cultivars based on three different methods

Folia Horticulturae, 2023
Flower bud development of fruit trees plays a key role in their climatic adaptation. It is closely related to dormancy release that determines winter frost susceptibility. Detailed characterisation of flower bud development of 25 almond (Prunus amygdalus
Keleta Belay Teweldemedhin, Szalay László, Ladányi Márta, Békefi Zsuzsanna   +3 more
doaj   +1 more source

Microsporogenesis, microgametogenesis, and pollen grain morphology of Fouquieria fasciculata (Fouquieriaceae, Ericales)

Botan‪ical Sciences, 2023
Background: Embryology of the male reproductive structures in Fouquieriaceae has been poorly studied. The ontogeny of the anther wall, microsporogenesis, microgametogenesis, and pollen morphology were described in detail for Fouquieria fasciculata ...
Fabiola Soto-Trejo, Sergio Zamudio-Ruiz, Silvia Espinosa-Matías   +2 more
doaj   +1 more source