Results 111 to 120 of about 52,751 (307)

Roles for NO and ROS signalling in pollen germination and pollen-tube elongation in Cupressus arizonica

open access: yesBiologia Plantarum, 2015
Roles for nitric oxide (NO) and reactive oxygen species (ROS) during pollen-tube growth have been well established in angiosperms, but there remains lack of information regarding their potential signalling roles in pollen tubes in gymnosperms.
S. Pasqualini   +6 more
doaj   +1 more source

Arisaema siahaense sp. nov. (Araceae) from India

open access: yesNordic Journal of Botany, EarlyView.
A new species of Arisaema Mart. (Araceae) belonging to sect. Fimbriata is described and illustrated here from the Siaha District, Mizoram, India. This new species is characterized by an evergreen, dioecious herbaceous habit, up to 1.08 m high, having a subglobose tuber, with a solitary trifoliate leaf.
Rabishankar Sengupta   +1 more
wiley   +1 more source

Characterisation of detergent-insoluble membranes in pollen tubes of Nicotiana tabacum (L.)

open access: yesBiology Open, 2015
Pollen tubes are the vehicle for sperm cell delivery to the embryo sac during fertilisation of Angiosperms. They provide an intriguing model for unravelling mechanisms of growing to extremes.
Alessandra Moscatelli   +9 more
doaj   +1 more source

Friables and embryogenic callus induction from embryo, ovule and style of citrus rootstocks : [P97] [PDF]

open access: yes, 2008
The incorporation of new technologies such as in vitro selection and protoplast fusion methods into citrus improvement programs offers new opportunities to facilitate, expedite, and fully utilize germplasm variability for both scion and rootstock ...
Arsalan, N.   +6 more
core  

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

open access: yesOikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz   +3 more
wiley   +1 more source

Viability and Vigor of Dura, Pisifera and Tenera Oil Palm (Elaeis Guineensis Jacq.) Pollen [PDF]

open access: yes, 2010
Selecting pollen with high viability and vigor are important for ensuring the success of oil palm seed production through controlled pollination. Therefore, an estimation of pollen viability and vigor is essential for fruit and seed setting.
Khin Aye Myint, NA
core  

Shifts in phenology influence synchrony of flowering plants and their pollinators along an elevation gradient

open access: yesOikos, EarlyView.
Climatic conditions alter the phenology of species, which may threaten the synchrony of biotic interactions. However, how phenological synchrony across entire communities of plants and their pollinators responds to varying environmental conditions remains poorly understood.
Mikko Tiusanen   +2 more
wiley   +1 more source

Expression-based and co-localization detection of arabinogalactan protein 6 and arabinogalactan protein 11 interactors in Arabidopsis pollen and pollen tubes [PDF]

open access: yes, 2013
Arabinogalactan proteins (AGPs) are cell wall proteoglycans that have been shown to be important for pollen development. An Arabidopsis double null mutant for two pollen-specific AGPs (agp6 agp11) showed reduced pollen tube growth and compromised ...
Amorim, Maria Isabel   +6 more
core   +1 more source

Wheat breeding approaches for designing wheat to thrive in a warmer world

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Wheat is a vital food crop, accounting for approximately 20% of daily calories and protein consumed worldwide. However, modern‐day wheat is under pressure from global change. The improvement rate of wheat yields is not keeping up with the demand of our growing population. Furthermore, abiotic and biotic stressors are becoming more prevalent. This paper
Jake Hill, Surbhi Grewal, Stella Edwards
wiley   +1 more source

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