Results 81 to 90 of about 2,842 (213)

The homeotic protein AGAMOUS controls microsporogenesis by regulation of SPOROCYTELESS [PDF]

, 2004
The Arabidopsis homeotic gene AGAMOUS (AG) is necessary for the specification of reproductive organs (stamens and carpels) during the early steps of flower development.
Ito, Natsuko, Das, Predeep, Wellmer, Frank, Alves-Ferreira, Márcio, Riechmann, José Luis, Ito, Toshiro, Yu, Hao, Meyerowitz, Elliot M.   +7 more
core  

Microsporogenesis in three tetraploid somatic hybrids of potato and their di(ha)ploid fusion partners

, 1992
The microsporogenesis of three somatic hybrids of potato, i.e. one tetraploid Solanum tuberosum (+) S. phureja, one tetraploid and one hypertetraploid S. tuberosum (+) desynaptic mutant, has been examined and compared with the microsporogenesis of the di(
Ferwerda, M.A., Pijnacker, L.P., Mattheij, W.M.   +2 more
core   +1 more source

Microsporogenesis in male-sterile and hermaphroditic plants of nine gynodioecious taxa of Hawaiian bidens (Asteraceae)

, 1987
Microsporogenesis was investigated in hermaphroditic and male-sterile plants in nine gynodioecious taxa of Hawaiian Bidens. Normal microsporogenesis in hermaphrodites and the onset of abortion in male steriles were similar in all taxa and in a hybrid ...
Ganders, FR, Sun, M
core   +1 more source

Optical and ultrastructural study of the pollen grain development in hermaphrodite papaya tree (Carica papaya L.)

Brazilian Archives of Biology and Technology, 2008
The objective of this study was to describe the pollen grain development in hermaphrodite papaya tree. The flower buds were collected at different stages of the development and the anthers were treated chemically for observation under optical and ...
Lídia Márcia Silva Santos, Telma Nair Santana Pereira, Margarete Magalhães de Souza, Pedro Correa Damasceno Junior, Fabiane Rabelo da Costa, Beatriz Ferreira Ribeiro, Noil Gomes de Freitas, Messias Gonzaga Pereira   +7 more
doaj   +1 more source

Floral morphology and anther development in diandrous orchid Paphiopedilum purpuratum with their taxonomic implications

Guangxi Zhiwu
The taxonomy of Paphiopedilum Pfitz. has been disputed and needs more data for clarification. Floral morphology and anther development in P. purpuratum were observed using microscope and paraffin section. The results were as follows: (1) It was supported
ZHU Yong, HUANG Jialin, TAO Kaifeng, WANG Yuecheng, ZHANG Jin, LI Lu   +5 more
doaj   +1 more source

Chemical mutagenesis in head cabbage (Brassica oleracea var.capitata L.): III effect of ethyl methane sulphonate on mycosporogenesis and pollen fertility [PDF]

Selekcija i Semenarstvo, 2006
The aim of present investigation was to study the effect of different ethyl methane sulfonate (EMS) concentrations (0.5, 0.6 and 0.7%) on microsporogenesis and on the expression of pollen fertility in M1 plants, obtained from treated cabbage seeds ...
Nikolova Vesselina, Antonova Galina, Tomlekova Nasia, Petkova Valentina   +3 more
doaj  

Histone modifications during tobacco male meiosis

Biologia Plantarum, 2019
The special and temporal distribution of several posttranslational histone modifications (H3K4me2, H3K4me3, H3K9me2, H3K27me2, H3K9ac, H3K14ac, H3K18ac, H3K27ac, H3S10ph, H3S28ph, H3T3ph, H3K4me1-H3T3ph, H3K4me3/H3T3ph H3T11ph, H2AT121ph, and H2A.XS139ph)
S. MURSALIMOV, E. DEINEKO, A. HOUBEN, D. DEMIDOV   +3 more
doaj   +1 more source

Rice cold tolerance at the reproductive stage in a controlled environment Tolerância ao frio do arroz no estádio reprodutivo sob condições controladas

Scientia Agricola, 2006
Cold tolerance of rice (Oryza sativa L.) during the reproductive stage is important to guarantee high yield under low temperature environments. Field selection, however, does not allow identification of adequate tolerance sources and limits selection of ...
Renata Pereira da Cruz, Sandra Cristina Kothe Milach, Luiz Carlos Federizzi   +2 more
doaj   +1 more source

A phenotypic marker for quantifying heat stress impact during microsporogenesis in rice (Oryza sativa L.) [PDF]

, 2014
Gametogenesis in rice (Oryza sativa L.), and particularly male gametogenesis, is a critical developmental stage affected by different abiotic stresses.
Shi, W, Craufurd, P Q, Oane, R, Jagadish, K S V   +3 more
core   +1 more source

Comportamiento meiótico de diferentes especies de lulo, Solanum sp Meiotic behavior of lulo species, Solanum sp

Acta Agronómica, 2010
Se realizó un análisis del comportamiento meiótico de las especies de lulo S. hirtum, S. quitoense y S. sessiliflorum, siguiendo la metodología convencional para los estudios de microsporogénesis.
Nancy Maricela Pareja Ordóñez, Nazira Katherine Santacruz Ordóñez, Héctor Ramiro Ordóñez Jurado, Tulio César Lagos Burbano   +3 more
doaj