Results 11 to 20 of about 2,842 (213)
Microsporogenesis of Apricot Cultivars in Hungary [PDF]
Like all phenological processes, microsporogenesis is mainly determined genetically, but its phenotypical expression is greatly influenced by environmental factors, particularly the temperature.
Veronika HAJNAL +4 more
doaj +4 more sources
Microsporogenesis of peach (Prunus persica L. Batsch) varieties
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 +2 more sources
The use of maize (Zea mays L.) pollen for basic scientific research has been well documented, but the progression of clear cytological features of maize microsporogenesis has not been fully documented. This study was undertaken to identify cytologically
M. Gerald Neuffer, Ming T. Chang
core +2 more sources
Microsporogenesis and pollen formation in cassava [PDF]
This article describes the complete microsporogenesis and pollen formation in cassava (Manihot esculenta Crantz) at the various developmental stages (pollen mother cell, meiosis, tetrads, early free spore, mid uninucleate, late uninucleate, binucleate ...
C. SAUTTER +9 more
core +6 more sources
Spikelet sterility in rice genotypes affected by temperature at microsporogenesis [PDF]
This study evaluated the effect of temperatures during the phase of microsporogenesis on spikelet sterility of paddy rice and identified genotypes tolerant to low temperatures at this growth stage.
Natalia M. de Souza +3 more
doaj +3 more sources
Microsporogenesis and Embryogenesis in Quercus [PDF]
Representative species from two subgenera in the genus Quercus were examined for floral structure and phenology, microsporogenesis, and embryogenesis. The species selected for investigation were: Quercus alba in the Lepidobalanus subgenera, and Quercus ...
Stairs, G. R.
core +5 more sources
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 [PDF]
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 +2 more sources
Polyamines in pollen: from microsporogenesis to fertilization [PDF]
The entire pollen life span is driven by polyamine (PA) homeostasis, achieved through fine regulation of their biosynthesis, oxidation, conjugation, compartmentalization, uptake, and release.
Serafini-Fracassini, Donatella +12 more
core +8 more sources
High temperatures during microsporogenesis fatally shorten pollen lifespan [PDF]
Many crop species are cultivated to produce seeds and/or fruits and therefore need reproductive success to occur. Previous studies proved that high temperature on mature pollen at anther dehiscence reduce viability and germinability therefore decreasing ...
Iovane M., Aronne G.
core +1 more source
Microsporogenesis and systematics of Aristolochiaceae [PDF]
Within Aristolochiaceae, a secretory tapetum and orbicules are ubiquitous, but both simultaneous and successive types of microsporogenesis occur. Simultaneous cytokinesis is apparently plesiomorphic within the order Piperales, in which Aristolochiaceae are now placed.
FAVIO GONZÁLEZ +2 more
openaire +2 more sources

