Free Newsletters - Space - Defense - Environment - Energy
. Farming News .

Laser technology sorting method can improve Capsicum pepper seed quality
by Staff Writers
Usak, Turkey (SPX) Oct 23, 2013

File image.

The high cost of vegetable crop seeds--hybrids in particular--has led growers to seek out new precision seeding and transplant production systems. The quality of vegetable seed lots can be affected by a variety of pre-storage and post-storage factors, so finding ways to improve seedling emergence percentages and uniformity is critically important for producers.

A new study from scientists in Turkey and The Netherlands (HortScience, August 2013) showed that chlorophyll fluorescence (CF) can be used successfully to improve quality in Capsicum pepper seed lots.

According to the authors of the study, peppers' (Capsicum annuum L.) habit of nonsynchronous seed production means that pepper fruits that are produced from different flowering times mature at different periods, thus resulting in different quality seeds.

"Pepper seed lots may consist of a mixture of less mature and fully mature seeds as a result of differences in flowering times," they explained, adding that this wide variation in a single lot can reduce overall seed quality.

"Less mature seeds germinate more slowly and produce smaller seedlings, whereas mature seeds emerge faster and produce larger seedlings. This variation in seed maturity ultimately results in variations in plant growth and development."

The research team set out to find a way to separate out less mature seeds in order to enhance the overall quality of pepper seed lots using a method called chlorophyll fluorescence, which has been used successfully to detect and sort other types of seeds.

The nondestructive technique uses laser technology, narrow optical bandwidth filters, and detection of chlorophyll in the seed coat to measure the resulting chlorophyll fluorescence (CF) and link it with the quality of the seeds. Chlorophyll fluorescence has been found to be effective for sorting cabbage, tomato, barley, carrot, and pepper seeds.

The researchers evaluated four different Capsicum cultivars at four fruit harvest dates: orange (immature), bright red (half mature), dark red (mature), and dark red and soft (over mature). Seeds were either sorted or non-sorted after harvesting, and standard laboratory germination, seedling emergence, and controlled deterioration tests were conducted.

Results showed that chlorophyll fluorescence sorting significantly increased laboratory germination, seedling emergence, and seed vigor. The scientists found that maximum improvements were obtained from seeds harvested from half-mature and mature stages.

"While previous studies evaluated seed quality solely based on laboratory germination tests conducted under optimum germination conditions, our work tested the effect of CF sorting not only on laboratory germination, but also on emergence and physiological aging as indicators of seed vigor," said corresponding author Burcu Begum Kenanoglu.

"The results showed that CF sorting affects germination and seed vigor. In our work, CF worked on the four cultivars examined, and this shows that the method may be well suited for Capsicum annuum. Chlorophyll fluorescence has the potential to upgrade seed quality in pepper lots as a nondestructive sorting technology."

The complete study and abstract are available on the ASHS HortScience electronic journal web site


Related Links
American Society for Horticultural Science
Farming Today - Suppliers and Technology

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Adding citrus fiber to meatballs improves nutritional quality, does not affect taste
Columbia MO (SPX) Oct 23, 2013
Many American diets fall short of meeting nutritional guidelines resulting in burgeoning obesity rates and health problems across the nation. Statistics show that most Americans consume only half of the daily recommended amount of dietary fiber. Now, a research team at the University of Missouri is addressing the fiber deficit by including citrus fiber in ground beef while retaining the quality ... read more

Satellites proposed as way to bring early detection of wildfires

CASIS Issues Request for Proposals: Remote Sensing From the ISS

Nation puts geospatial data system on the map

Indra Leads The European G-Sextant Earth Observation Project

Software Uses Cyborg Swarm To Map Unknown Environs

DLR, Thales Alenia Space and SES Develop Innovative Space-Based Air Traffic Control Monitoring System

Boeing, China Southern and China Aviation Authorities Establish Precision Navigation Procedures

Plan maps development of China's sat-nav industry

Economic Assessment of Mountain Pine Beetle Timber Salvage

Without plants, Earth would cook under billions of tons of additional carbon

A few tree species dominate Amazon

Field Museum scientists estimate 16,000 tree species in the Amazon

Scientists Identify Key Genes for Increasing Oil Content in Plant Leaves

Ethanol Safety Seminar Planned in Tacoma

US Biodiesel Production Surpasses Set Target for Second Straight Year

AREVA awarded a contract for the construction of a biomass power plant in the Philippines

New NRDC Crowdfunding Campaign to Connect Schools to Solar Power

ecoSolargy's End-To-End HDPV Solution Reduces PV System Costs

Santerno Introduces New PV Power Plant Controller that Provides Single Point of Control

Solar Grid Storage and AllCell Partner to Help Ensure Grid Stability

Spain launches first offshore wind turbine

Key German lawmaker: End renewable energy subsidies by 2020

Installation of the first AREVA turbines at Trianel Windpark Borkum and Global Tech 1

Trump's suit to halt wind farm project to be heard in November

Two China miners saved 10 days after flood, 10 confirmed dead

Calculating the true cost of a ton of mountaintop coal

Ukraine designates 45 coal mines for sale in privatization push

German coal mine turns village into ghost town

China paper's front-page demand for journalist release

China paper's front-page demand for journalist release

Chinese villagers clash with police, injuring 27: reports

Outspoken China professor fired for poor teaching: university

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement