Results 61 to 70 of about 652,281 (290)

Development and Optimization of a Germination Assay and Long-Term Storage for Cannabis sativa Pollen

open access: yesPlants, 2020
Pollen viability and storage is of great interest to cannabis breeders and researchers to maintain desirable germplasm for future use in breeding or for biotechnological and gene editing applications.
Daniel Gaudet   +4 more
doaj   +1 more source

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

open access: yesAmerican 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   +5 more
wiley   +1 more source

Determination of Pollen Fertility of Some Cut Rose Varieties in Different Periods

open access: yesDüzce University Faculty of Forestry Journal of Forestry
In rose breeding by hybridization, the viable pollen and germination rate of the male parent increases the rate of successful pollination. Therefore, a good variety of pollinators is always needed in hybridization studies.
Şüheda Basire Akça Yılmaz   +1 more
doaj   +1 more source

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard   +4 more
wiley   +1 more source

UJI VIABILITAS SERBUK SARI SECARA In-Vitro KELAPA (Cocos nucifera L.“Rangda”) DENGAN WAKTU DAN SUHU PENYIMPANAN YANG BERBEDA

open access: yesSimbiosis: Journal of Biological Sciences, 2013
This aims of the research was to determine the structure and pollen viability of RangdaCoconut (Cocos nucifera L. “Rangda”) stored at different time and temperatures. Pollen sampleswere collected from Gianyar, Klungkung and Negara.
Sista Nirmala   +2 more
doaj  

Evaluation of Pollen Vitality in Different Sugarcane Genotypes Utilizing Various Techniques and Time Intervals [PDF]

open access: yesResearch Journal of Applied Biotechnology
This study was conducted to contrast two staining techniques for determining pollen viability in sugarcane. At three diverse times (6:30, 8:00, and 9:30 a.m.), pollen from seven sugarcane genotypes was gathered, and its vitality was assessed using ...
Wafaa Grad   +3 more
doaj   +1 more source

Optimizing pollencounter for high throughput phenotyping of pollen quality in tomatoes

open access: yesMethodsX, 2020
The macro “PollenCounter” in ImageJ was initially developed to assess pollen viability in grapevine. We set out to see if PollenCounter could be used to assess pollen number and viability in tomatoes.
Mathieu Anatole Tele Ayenan   +5 more
doaj   +1 more source

Screening and optimisation of in vitro pollen germination medium for sweetpotato (Ipomoea batatas)

open access: yesPlant Methods, 2023
Background Sweetpotato is an important vegetable and food crop that is bred through sexual crosses and systematic selection. The use of in vitro germination of sweetpotato pollen to test its viability has important theoretical and practical implications ...
Zongkuan Weng   +8 more
doaj   +1 more source

Determination of Pollen Viability in Tomatoes [PDF]

open access: yesJournal of the American Society for Horticultural Science, 1992
A procedure is described for determining pollen viability in tomatoes (Lycopersicon esculentum Mill.) by growing pollen in a growth medium containing 0.29 M sucrose, 1.27 m m Ca(NO 3 ) 2
openaire   +1 more source

MicroPoem: experimental investigation of birch pollen emissions [PDF]

open access: yes, 2010
Diseases due to aeroallergens constantly increased over the last decades and affect more and more people. Adequate protective and pre-emptive measures require both reliable assessment of production and release of various pollen species, and the ...
Michel, Dominik   +2 more
core  

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