Temat: seedling vigor - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The phenological and pomological traits of selected genotypes of wild pear [Pyrus pyraster (L.) Du Roi] important for the production of generative rootstocks
Autorzy:: Gordana, Š.T.
Tematy:: plant cultivation
wild pear
Pyrus pyraster
Pyrus communis
plant genotype
rootstock
seedling vigor
generative rootstock
phenological trait
pomological trait; Pokaż więcej
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Powiązania:: https://bibliotekanauki.pl/articles/12262440.pdf Link otwiera się w nowym oknie
Opis:: The aim of this work is to produce the generative rootstocks for the wild pears, which will be of moderate denseness. The initial material is the population of wild pear in the area of Polimlje. The study focused on few segments. Very first one included recording of the phenological traits – first flowering, full flowering, end of flowering and harvest period. The other segment comprised pomological features, i.e. physical [fruit weight (g), fruit size (mm), mass of dry seed (g), and number of seed in 1 kg of the fruit]. Seeds from 9 selected genotypes of wild pears were planted in the nursery and raised seedlings were evaluated for nursery characteristics: germination, seedling vigor, uniformidty and branching. Raised seedlings were used as rootstocks for scion cultivar ‘Grand Champion’. The most important benefit of this study is the fact that the parent trees, the seeds of which provide the best morphological and physiological characteristics for the production of generative rootstocks, were found and favored (in situ). Results of this research show that the rapid growth and uniformity of scions depend on the genetic characteristics of generative rootstocks of selected genotypes of wild pears, such as: plant height, stem diameter (corpulence), branching and uniformity. The selected genotypes, especially ‘Genotype 11’, proved to be the best for mountainous areas of the north of Montenegro, higher altitudes and poorer types of soil. The ‘Genotype 11’ is suggested as the best option for the production of generative rootstocks due to its small vigour level.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Seed vigour testing for predicting field seedling emergence in Fagus sylvatica L.
Autorzy:: Jensen, M
Tematy:: predictability
vigor test
Fagus sylvatica
beech
seed vigor
seedling emergence
critical root length
tree seed; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/41595.pdf Link otwiera się w nowym oknie
Opis:: A vigour test that can predict the field emergence percentage of tree seeds accurately has long been a wish from growers. A new test method, the Critical Root Length (CRL) vigour test, was developed for beech seeds on the basis of the length of primary roots, germinated seeds can produce during a specified test. Pretreated, imbibed seeds were germinated in a vertically positioned moist paper roll during 20days at 15°C in 12 hour light daily. Root length of normally germinated seedlings was recorded and correlated with field emergence percentage to obtain a critical root length for the ability to emerge in the field. Critical root length for Fagus sylvatica was found to be 45 mm. The percentage of normally germinated seeds with roots longer than 45 mm in the CRL test is a predicted estimate of the field emergence percentage of a seed lot. Results of two tests on 5 and 10seed lots showed generally good correlation between CRL predicted emergence and actually obtained field seedling emergence. Large variation in root length was found between and within seed lots, thus displaying large differences in seed vigour. The new test is an applied, easy and inexpensive vigour test developed for nurserymen and seed technicians in order to predict field emergence more accurately.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Winter storage of pedunculate oak (Quercus robur L.) seedlings
Zimowe przechowywanie sadzonek dębu szypułkowego (Quercus robur L.)
Autorzy:: Wesoly, Wojciech
Chabowska, Anita
Tematy:: winter storage
storage
pedunculate oak
Quercus robur
seedling
oak
plant seedling
plant vigor
plant growth
sadzonki dębu
zimowe przechowywanie
admitancja; Pokaż więcej
Wydawca:: Wyższa Szkoła Zarządzania Środowiskiem w Tucholi
Powiązania:: https://bibliotekanauki.pl/articles/791403.pdf Link otwiera się w nowym oknie
Opis:: The aim of the study was to determine the effect of quality of Oak seedlings on their growth and vigour measured with their electrical admittance, in the first year after five methods of winter storage. The seedlings were stored in different package inside the cold room with controlled temperature and outdoors at the nursery yard in polystyrene growing cells.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A vigour test for quality assessment of stored beech (Fagus sylvatica L.) nuts
Autorzy:: Tylkowski, T
Tematy:: seed quality
beechmast
vigor test
quality assessment
Fagus sylvatica
beech
nut
pathogenic fungi
seedling emergence
stored beech; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/41627.pdf Link otwiera się w nowym oknie
Opis:: Many seed lots of beech (Fagus sylvatica L.) nuts are characterized by various levels of infection with pathogenic fungi, such as Fusarium, Rhizoctonia and Cylindrocarpon spp. Favourable conditions for fungal infection of beechnuts are created especially during their long-term provisional storage without earlier drying to the moisture content of 8-10%. Strongly infected seed lots are not suitable for long-term storage. During the pre-sowing treatment of seeds by stratification without medium, fungi develop under the moist conditions and infect many healthy seeds. To assess the quality of beechnuts, a vigour test has been developed. Seeds removed from the pericarp (4 replications of 50 nuts each) are placed in boxes between two layers of moist tissue paper and incubated at 25°C for 120 hours. After this period decayed seeds (mouldy seeds) are excluded, and the remained are subjected to embryo viability by the tetrazolium test. When the percentage of decaying seeds (including those with necroses) does not exceed 10-15%, such seed lot can be used for long-term storage. If the percentage exceeds 50%, the seed lot should be considered unsuitable both for storage and for pre-sowing treatment, because only a very small proportion of seeds will emerge in the nursery.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The effect of cultivation method on selected traits related to the sowing value of shallot (Allium cepa L. var. ascalonicum Backer) seed
Wpływ metody uprawy na niektóre cechy wartości siewnej nasion szalotki (Allium cepa L. var. ascalonicum Backer)
Autorzy:: Tendaj, M.
Krawiec, M.
Palonka, S.
Mysiak, B.
Tematy:: plant cultivation
cultivation method
sowing value
shallot
Allium cepa var.ascalonicum
seed
seedling
1000 grain weight
vigor
germination capacity; Pokaż więcej
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Powiązania:: https://bibliotekanauki.pl/articles/11542840.pdf Link otwiera się w nowym oknie
Opis:: In many countries, the traditional method of growing shallots from bulbs is replaced by direct seeding in the field or by planting seedlings. The availability of shallot seed with high parameters of the sowing value is an important condition for growing shallot in larger areas. It is possible thanks to the progress in breeding and introduction into cultivation of new cultivars that produce seed stalks and seed. Therefore, the aim of the present study was to evaluate the sowing value of seed of the true-breeding cultivar ‘Toto’, when this seed is obtained by planting steckling bulbs (bulb-to-seed method) and by using the seed-to-seed method. This study, conducted in the period 2010–2012, was to evaluate some important characteristics of the seed quality obtained by planting different diameter bulbs (20–60 mm, 4 fractions every 10 mm) in autumn and spring and from seedlings planted in summer (third 10-day period of July and first and third 10-day period August). The quality of shallot seed was evaluated taking into account the following parameters: 1000 seed weight (TSW), germination energy and capacity as well as vigour tests (seedling growth test and seedling growth rate test). Shallot cultivation method had a large effect on 1000 seed weight, but it only slightly affected germination capacity and vigour of seed obtained. Larger seeds were obtained from bulbs, regardless of their planting time, compared to the cultivation method involving planting seedlings in summer. The diameter of bulbs used for planting at autumn planting time proved to be an important factor for TSW, germination energy and the traits determining seed vigour. In the case of this planting time, seed obtained from large bulbs with a diameter of 40–60 mm was distinguished by the best quality. The study did not show such a correlation for seed derived from spring bulb planting.
W wielu krajach tradycyjna uprawa szalotki z cebul jest zastępowana uprawą z siewu nasion wprost na pole lub z sadzenia rozsady. Dostępność nasion o wysokich parametrach wartości siewnej jest warunkiem uprawy szalotki na większych powierzchniach. Jest to możliwe dzięki postępowi prac hodowlanych i wdrażaniu do uprawy nowych odmian, które wytwarzają nasiona. Z tego względu celem podjętych badań była ocena wartości siewnej nasion ustalonej odmiany ‘Toto’ przy ich pozyskiwaniu metodą sadzenia cebul (bulb-to-seed) i metodą bezwysadkową (seed-to-seed). Badania przeprowadzone w latach 2011–2012 obejmowały ocenę wartości siewnej nasion otrzymanych z jesiennego i wiosennego sadzenia cebul o średnicy 20–60 mm (4 wielkości co 10 mm) oraz z letnich terminów sadzenia rozsady (trzecia dekada lipca oraz pierwsza i trzecia dekada sierpnia). Jakość nasion oceniano z uwzględnieniem następujących parametrów: masy 1000 nasion, energii i zdolności kiełkowania, a także wigorowych testów wzrostowych (test wzrostu siewki i test szybkości wzrostu siewki). Metoda uprawy szalotki na nasiona miała duży wpływ na masę 1000 nasion, a niewielki na zdolność kiełkowania i wigor nasion. Dorodniejsze nasiona uzyskano z roślin uprawianych z sadzenia cebul (niezależnie od terminu ich sadzenie) w porównaniu z metodą sadzenia rozsady w letnich terminach. średnica cebul użytych do sadzenia w jesiennym terminie okazała się istotnym czynnikiem dla masy 1000 nasion, energii kiełkowania oraz cech decydujących o wigorze nasion. Z tego terminu sadzenia cebul najlepszą jakością wyróżniały się nasiona uzyskane z dużych cebul o średnicy 40–60 mm, czego nie wykazano u nasion z wiosennego sadzenia cebul o takiej średnicy.
Dostawca treści:: Biblioteka Nauki

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