Effect of Seed Size of<i>Afzelia quanzensis</i>on Germination and Seedling Growth

Mtambalika, Kupatsa; Munthali, Chimuleke R.Y.; Gondwe, D.; Missanjo, Edward

doi:10.1155/2014/384565

Cited by 24 publications

(30 citation statements)

References 12 publications

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“…As mentioned before, germination efficiency is largely affected by seed mass [27][28][29][30][31][32][33][34]. Heavier seeds are more likely to germinate and produce seedlings because plump seeds are more abundant in storage compounds that are essential for germination.…”

Section: Discussionmentioning

confidence: 99%

“…Seed viability, germinative energy, and germination capacity are the main determinants of seed quality [27]. According to many authors, germination efficiency is largely correlated with seed mass, but plumper seeds do not always germinate faster than small seeds [27][28][29][30][31][32][33][34]. In tree nurseries, seeds are sorted into different size fractions to promote even germination.…”

Section: Introductionmentioning

confidence: 99%

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Physical Properties of Seeds of Eleven Spruce Species

Kaliniewicz

Żuk

Kusińska

2018

Forests

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Information about the variations and correlations between the physical properties of seeds is essential for designing and modeling seed processing operations. The aim of this study was to determine the variations in the basic physical properties of seeds of selected spruce species and to identify the correlations between these attributes for the needs of the seed sorting processes. Terminal velocity, thickness, width, length, mass, and the angle of external friction were determined in the seeds of 11 spruce species. The measured parameters were used to calculate three aspect ratios (geometric mean diameter, sphericity index, and specific mass) of each seed. The average values of the basic physical properties of the analyzed seeds were determined in the following range: terminal velocity—5.25 to 8.34 m s−1, thickness—1.10 to 2.32 mm, width—1.43 to 3.19 mm, length—2.76 to 5.52 mm, the angle of external friction—23.1 to 30.0°, and mass—2.29 to 18.57 mg. The seeds of Jezo spruce and Meyer’s spruce were most similar to the seeds of other spruce species, whereas oriental spruce seeds differed most considerably from the remaining seeds. Our findings indicate that spruce seeds should be sorted primarily with the use of mesh sieves with longitudinal openings to obtain fractions with similar seed mass and to promote even germination.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physical Properties of Seeds of Eleven Spruce Species

Kaliniewicz

Żuk

Kusińska

2018

Forests

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“…Such variations in seed weight between the cultivars (Sadeghi, 2011), genotypes (Ashirvar, 2012) and species (Li et al, 2015) have been recorded in other plants. The seeds of both the crosses also varied significantly in length and width between three size classes as reported in Afzelia quenzensis (Mtambalika et al, 2014). It is reported that, seed-size is a plastic trait of the plants (Souza and Fagundes, 2014) and the individual seed-size (mass) in a species varies from nearly constant (Fenner, 1995) to as high as 16-fold (Hawk and Maun, 1989) and several factors may be responsible for this type of variation (Shaukat et al, 1999).…”

Section: Seed Size Variationmentioning

confidence: 65%

Screening of F1 progeny for selection of superior hybrids in mulberry (Morus spp.) - A simple approach PART I: Screening of seedlings in relation to seed size

Shafiei

Basavaiah

2017

IJB

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In mulberry (Morus spp.), the process of selection of promising hybrids from F1 population requires the screening of a large number of progenies and a long period. To develop a simple and faster approach for screening, studies were conducted using F1 seeds of two crosses. The details of screening studies conducted in relation to seedsize and seedling-size are reported separately in two parts. In this part, the F1 seeds were size-graded as small, medium and large seeds; their progenies were raised separately and screened in nursery. There was a considerable degree of variation in size of seeds and medium-size class seeds were in high percentage in both the crosses. The length, width and weight of seeds were also varied between the seed size classes significantly in both the crosses. The seed size classes differ with high significance in shoot length and Root collar diameter and also differ significantly in root length and weight of seedlings. The positive correlation between the seed size and growth of seedlings, seed size and germination, seed size and seedling survival in nursery indicated that size-grading of seeds and rejection of small seeds in the beginning of screening process itself, may help to increase the efficiency of screening by increasing the chances of getting superior hybrids from limited progenies. However, confirmation on the performance of large seedlings from small seed size class may help to draw conclusion. Hence, the studies are continued with size-grading of seedlings in the next part of screening study.

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“…Аналогічні результати маси насіння до наших досліджень для Р. abies та P. pungens наведені у роботі Kaliniewicz (2018). Слід зазначити, що від маси та розмірів насіння в значній мірі залежать життєздатність сходів та подальший розвиток сіянців [25]. Показники енергії проростання та лабораторної схожості насіння у Р. abies з насаджень контролю були достовірно вищими, ніж у цих рослин з насаджень парків, автомагістралей та біля промислових підприємств в середньому у 1,5; 2,0; 8,2 та 1,4; 1,9; 5,6 разів відповідно.…”

Section: рис 1 картосхема розташування досліджених насаджень Pісеа unclassified

Sеed productivity and quality of Picea abies and P. pungens in the Kriviy Rih plantations

Нuseіnova¹

2018

vsllr

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Reproductive capability is considered as one of indicators of successful introduction; it helps to evaluate adaptation potential of plants, especially in techogenic conditions. The aim of our work is to research morphometric parameters of cones, profitability and seed quality of Рісеа аbies та P. pungens in the plantations with various levels of aerotechnogenic influence in conditions of an industrial city in the steppe zone of Ukraine. The objects of the studying were the cones of 30–40-year-old trees of P. аbies та P. pungens from eight different plantations situated along the whole city of Kryvyi Rih (126 km) and having various levels of technogenic pollution. We revealed that the maximal length of cone in two investigated species (108,4 and 88,7 mm respectively), width (28,6 and 24,7 mm); the highest seedling vigour (41,0 and 7,2 %), laboratory germination (54,2 and 20,6 %), seed mass (6,9 and 4,2 g), and length of germ (18,5 and 13,8 mm) are noted in the trees from Botanical Garden. The minimal values of all the same indices were ascertained for the trees growing near the metallurgical combine “ArcelorMittal Kryvyi Rih”: length of cones – 92,3 and 73,9 mm; width of cones – 26,2 and 22,4 mm; as well as the lowest seedling vigour (2,4 and 1,4 %); laboratory germination (5,0 and 2,0 %), seed mass (5,4 and 3,4 g), and length of germ (12,6 and 5,4 mm). The general seed quantity for a cone of P. аbies та P. pungens, in all the plantation types, varied from 203,9 to 217,2 seeds and from 198,6 to 204,3 ones respectively. The least part of fertile seeds (11,5–13,3 %), and the biggest part of sterile (56,5–58,7 %) and underdeveloped (29,8–30,1 %) ones were noted in the plants of P. pungens directly exposed to emissions of industrial enterprises; for the plants of P. abies the same indices were 20,2–22,5 %; 51,5–52,6 % та 26,0–27,2 % respectively. Therefore, increasing level of techogenic pollution by air pollutants, which is observed during some last years, oppresses the generative sphere of species of genus Рісеа in conditions of the steppe zone of Ukraine.

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Effect of Seed Size ofAfzelia quanzensison Germination and Seedling Growth

Cited by 24 publications

References 12 publications

Physical Properties of Seeds of Eleven Spruce Species

Physical Properties of Seeds of Eleven Spruce Species

Screening of F1 progeny for selection of superior hybrids in mulberry (Morus spp.) - A simple approach PART I: Screening of seedlings in relation to seed size

Sеed productivity and quality of Picea abies and P. pungens in the Kriviy Rih plantations

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