Results 91 to 100 of about 279,706 (339)

Seeds of change: The impact of Ethiopia's direct seed marketing approach on smallholders' seed purchases and productivity

American Journal of Agricultural Economics, EarlyView.
Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen, Gashaw T. Abate, Seid Yimam, Rui Benfica, David J. Spielman, Frank Place   +5 more
wiley   +1 more source

Investigations into stability in the fig/ fig-wasp mutualism [PDF]

, 2010
Fig trees (Ficus, Moraceae) and their pollinating wasps (Chalcidoidea, Agaonidae) are involved in an obligate mutualism where each partner relies on the other in order to reproduce: the pollinating fig wasps are a fig tree’s only pollen disperser ...
Al-Beidh, Sarah, Al-Beidh, Sarah
core   +1 more source

Phylogenetic systematics of Juncaceae

American Journal of Botany, EarlyView.
Abstract Premise Juncaceae has needed taxonomic revision for some time. Specifically, the genus Juncus s.l. is known to be paraphyletic because five small southern‐hemisphere genera have been shown repeatedly to be nested within it. In 2022, a new classification was proposed, based on phylogenies built from one nuclear and three plastid regions ...
Reed J. Kenny, Lenka Záveská Drábková, Daniel Potter   +2 more
wiley   +1 more source

Evidence of widespread pollen limitation in diverse specialty crops on commercial farms

Royal Society Open Science
Specialty crops (non-staple fruits and vegetables) have diverse pollination requirements and pollinator communities, yet production may be limited by pollen limitation.
Eleanor Stroh, Ashley Leach, Zeus Mateos-Fierro, Ian Kaplan   +3 more
doaj   +1 more source

Pollination deficit in open-field tomato crops (Solanum lycopersicum L., Solanaceae) in Rio de Janeiro state, Southeast Brazil

Journal of Pollination Ecology, 2013
More than 70% of world’s crops benefit from biotic pollination, and bees are their main pollinators. Despite the fact that some of these insects have been broadly studied, understanding the interactions between plant crops and their pollinators with a ...
Mariana Scaramussa Deprá, Geovana Girondi Delaqua, Leandro Freitas, Maria Cristina Gaglianone   +3 more
doaj   +1 more source

AN EMPIRICAL ANALYSIS OF HONEYBEE POLLINATION MARKETS [PDF]

Pollination by honeybees plays an important role in modern agriculture. Some crops are greatly dependent on honeybees (almonds, apples, avocados, blueberries, and cherries are examples) while the yields and quality of other crops are significantly ...
Burgett, Michael, Rucker, Randal R., Thurman, Walter N.   +2 more
core   +1 more source

More than symbioses : orchid ecology ; with examples from the Sydney Region [PDF]

, 2013
The Orchidaceae are one of the largest and most diverse families of flowering plants. Orchids grow as terrestrial, lithophytic, epiphytic or climbing herbs but most orchids native to the Sydney Region can be placed in one of two categories.
Entwisle, Timothy J., Perkins, Andrew J., Weston, Peter H.   +2 more
core  

Foraging Behavior of Honeybees (Apis Mellifera L.) and Ground Bumblebees (Bombus Terrestris L.) and its Influence on Seed Yield and Oil Quality of Oil Tree Peony Cultivar ‘Fengdan’ (Paeonia Ostii T. Hong et J. X. Zhang)

Journal of Apicultural Science, 2020
Oil peony (Paeonia spp.) is a new type of woody oil crop in China with a large cultivation area. Inadequate pollination is one of the main reasons for low seed yield.
He Chunling, Zhang Kaiyue, Han Dongbo, Wang Shuaibing, Hou Xiaogai, Zhu Chaodong   +5 more
doaj   +1 more source

Aging and longevity in decades‐old genebanked seeds from U.S. endangered plant species: Assessments using survival and RNA integrity assays

American Journal of Botany, EarlyView.
Abstract Premise Seed longevity is critical for successful genebanking, but it is hard to detect or predict. We examined survival of genebanked seeds from species native to the United States to estimate longevity. We tested whether RNA integrity (RIN) can be used to detect aging and predict mortality. Methods Dry seeds from >100 species were stored for
Christina Walters, Katherine D. Heineman, Lisa Hill, Hannah Tetreault, Parker Tyler, Zoe Zingerman, Shaimaa Ibrahim, Joyce Maschinski   +7 more
wiley   +1 more source

Effects of different pollination methods on tomato fruits’ quality and metabolism

Frontiers in Plant Science
Bee pollination can affect tomato yield and quality. The mechanism of improving the yield and quality of tomatoes by bee pollination is not clear, and few studies have been conducted.
Wei-Hua Ma, Wen-Qin Wu, Huai-Lei Song, Jia Lei, Li-Xin Li   +4 more
doaj   +1 more source