The effect of insect herbivory on seed production of Lupinus nootkatensis , an introduced species in Iceland

2020 ◽  
Vol 22 (2) ◽  
pp. 136-145
Author(s):  
Brynja Hrafnkelsdottir ◽  
Bjarni D. Sigurdsson ◽  
Edda S. Oddsdottir ◽  
Halldor Sverrisson ◽  
Gudmundur Halldorsson
2020 ◽  
Vol 4 (3) ◽  
pp. 265
Author(s):  
Yusnaini Yusnaini ◽  
Muhammad Ramli ◽  
Zainuddin Saenong ◽  
Indriyani Nur ◽  
Indrayani Indrayani

Broodstock Introduction and Technology Transfer of Crayfish (Cerax quadricarinatus) Hatchery in the Community Groups in Ladongi Subdistrict, East Konawe RegencyAbstract. Crayfish is an introduced species that has the potential to be developed.  However, Its development is hindered by the availability of the seeds. The aim of this activity was to transfer  crayfish hatchery technology into two community groups in Ladongi Subdistrict, East Konawe  Regency. These activities were conducted from 2017-2018. The forms of activities were hatchery extension/training, introduction of crayfish broodstocks, contruction of breeding ponds and hatcheries and evaluation of knowledge, skills, availability of production facilities and the ability of partners to produce caryfish seeds. The results showed that the knowledge level of participants based on indicators was 55-91%., from know nothing to know many things about crayfish.  The skill level of participants based on indicators was 64-100%, from unable to be able to seed crayfish. Both groups are able to manage resources and produce seeds, and as crayfish suppliers. In addition to seed production, the groups also produce crayfish for consumption and for broodstocks. Keywords: Crayfish, hatcheries, technology transfer, community groups.Abstrak. Lobster air tawar (LAT) merupakan spesies introduksi yang potensi dikembangkan, namun terkedala pada ketersediaan benih.Kegiatan ini bertujuan mentransfer teknologi pembenihan LAT kepada dua kelompok masyarakat di Kecamatan Ladongi Kabupaten Kolaka Timur. Kegiatan direalisasikan tahun 2017-2018. Bentuk kegiatan yaitu  penyuluhan/pelatihan pembenihan, introduksi indukan LAT, konstruksi kolam indukan dan pembenihan. Evalusi tingkat pengetahuan, keterampilan, ketersediaan sarana produki dan kemampuan mitra memproduksi benih LAT. Hasil kegiatan menunjukan bahwa, tingkat serapan pengetahuan peserta berdasarkan indikator yaitu 55-91%, dari tidak tahu menjadi tahu tentang LAT. Tingkat keterampilan peserta berdasarkan indikator 64-100 %, dari tidak bisa menjadi bisa membenihkan LAT. Kedua kelompok mampu mengelola sumberdaya dan memproduksi benih, sebagai penyuplaiLAT. Selain bentuk benih kelompok memproduksi LAT ukuran konsumsi dan indukan bertelur.Kata Kunci: Lobster air tawar, pembenihan, alih teknologi, kelompok masyarakat


2012 ◽  
Vol 13 (2) ◽  
pp. 107-111
Author(s):  
R. Hammon ◽  
M. Franklin
Keyword(s):  

Author(s):  
Vladimir Zolotarev

A characteristic property of legumes is the formation of hard-stone seeds. To use such seeds for sowing, it is necessary to carry out measures to increase their seeding indicators. The article provides an overview of methods of pre-sowing preparation of seeds, priming (Seed Priming). The harvest of Birdsfoot trefoil (Lotus corniculatus L.) can contain up to 90% or more hard-stone seeds. Mechanical priming of hard-stone seeds of Birdsfoot trefoil increases their germination energy and field germination.


2016 ◽  
Vol 44 (3) ◽  
pp. 500-513
Author(s):  
S. Peluffo ◽  
H. González Idiarte ◽  
A. Borges ◽  
J. Arboleya ◽  
G.A. Galván

Author(s):  
A.N. Khovrin ◽  
D.A. Yanaeva

В статье описаны симптомы поражения семенных растений редиса A. candida, дана оценка ряда сортов с разной устойчивостью к A. candida. Описаны способы борьбы с этим заболеванием при элитном семеноводстве редиса. В результате двулетней оценки образцов питомника размножения выявлено, что есть сортовая специфика устойчивости к Albugo candida. Более склонен к поражению в генеративную фазу развития сорт Кармен, наиболее устойчив к патогену сорт Меркадо.The symptoms of A. candida on seed plants radish are described a number of varieties with different resistance to A. candida are evaluated. The methods of combating of this disease in elite seed production of radish are described. As a result of twoyear evaluation of breeding nursery samples it was revealed that there is varietal specificity of resistance to A. candida. The Carmen cultivar is more prone to disease in the generative phase, the most resistant to the pathogen is Mercado cultivar.


2018 ◽  
Author(s):  
A  Khovrin ◽  
M  Ibragimbekov ◽  
R  Bagrov

Даны результаты оригинального первичного семеноводства корнеплодных культур в изоляторах в селекционно-семеноводческом центре агрохолдинга «Поиск» (Раменский район Московской области). Описаны технологические особенности процесса семеноводства, представлен видовой состав болезней и вредителей семенных растений в условиях исследований.The results of the original primary seed growing of root crops in cells at breeding and seed production centre of Poisk Agro Holding (Ramensky district, Moscow region) are given. Technological peculiarities of the process of seed production, species composition of pests and diseases of seed plants in terms of research are presented.


Author(s):  
S.E. Mikhalin S.E. ◽  

The article sets out information on the conduct of soil control of the potato elite, provides information on the state of elite seed production of potatoes in the Central region of Russia according to the data of soil control - which regions participated in its implementation, how many samples and varieties of potatoes were provided for soil control in different years, what were the main varieties, which potato diseases were taken into account.


Author(s):  
F C. Allen ◽  
T.J. Smallridge ◽  
G.W. Bourdot
Keyword(s):  

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