scholarly journals Pengaruh Sumber Benih dan Famili Terhadap Pertumbuhan Bibit Mahoni Daun Lebar (Swietenia macrophylla King.) Umur Tujuh Bulan

2019 ◽  
Vol 13 (2) ◽  
pp. 151
Author(s):  
Mashudi Mashudi ◽  
Mudji Susanto ◽  
Liliana Baskorowati
Keyword(s):  
Latin America ◽  
Exotic Species ◽  
Seedling Growth ◽  
Height Growth ◽  
Stem Diameter ◽  
Seed Source ◽  
Swietenia Macrophylla ◽  
West Java ◽  
Seed Sources ◽  
The Family

Mahoni daun lebar (Swietenia macrophylla King.) merupakan jenis eksotik dari Amerika Latin yang telah ditanam di Indonesia sejak tahun 1870. Jenis ini merupakan pemasok kayu pertukangan yang cukup penting di Indonesia. Tujuan penelitian adalah mengetahui pengaruh sumber benih dan famili terhadap keragaman pertumbuhan bibit S. macrophylla untuk mendukung kegiatan pemuliaan. Rancangan percobaan yang digunakan Rancangan Acak Lengkap yang terdiri dari dua faktor, yaitu sumber benih (Banjar-Jabar, Samigaluh – Kulonprogo, Bondowoso-Jatim dan Lombok-NTB) dan famili (35 famili). Hasil analisis menunjukkan bahwa sumber benih berpengaruh nyata terhadap pertumbuhan tinggi dan diameter batang, sedangkan famili berpengaruh nyata terhadap pertumbuhan tinggi, diameter batang dan jumlah daun pada umur 7 bulan. Pertumbuhan bibit dengan tinggi terbaik (55,8 cm) berasal dari sumber benih Banjar dan pertumbuhan bibit dengan diameter batang terbaik berasal dari sumber benih Banjar dan Lombok masing-masing sebesar 0,62 cm dan 0,61 cm.Effect of Seed Source and Family on The Growth of (Swietenia macrophylla King.) Seedling at Seven Months Old.AbstractSwietenia macrophylla King. is an exotic species from Latin America which have been planted in Indonesia since 1870. This species is a good wood source for construction timber which is quite important in Indonesia. This study was conducted to determine the effect of seed source and family on S. macrophylla seedling growth which may be useful for supporting breeding program of this species. The seeds were collected from four seed sources: Banjar - West Java, Samigaluh - Kulonprogro, Bondowoso - East Java and Lombok – West Nusa Tenggara. Every seed source consisting of 10 families, except Bondowoso which had 5 families. The study was arranged in a randomized complete design, five seedlings per plot and repeated 5 times for each family. At 7 months old the seed source had significantly influence on height and stem diameter, while the family significantly influence height, stem diameter and the number of leaf. Banjar seed source had the best height growth (55.8 cm), while Banjar and Lombok seed sources had the best stem diameter, respectively 0.62 cm and 0.61 cm.

Silver Maple Seed Sources for Increased Biomass Production

1988 ◽  
Vol 5 (3) ◽  
pp. 180-184 ◽  
Author(s):  
Richard F. Kopp ◽  
Wayne A. Geyer ◽  
William R. Lovett
Keyword(s):  
Biomass Production ◽  
Great Plains ◽  
Height Growth ◽  
Seed Source ◽  
Stem Number ◽  
Seed Sources ◽  
Short Rotation ◽  
Silver Maple ◽  
South Central ◽  
Maple Seed

Abstract Silver maple shows promise for use in short-rotation intensive culture energy plantings. A seed source study composed of trees from 26 midwest locations was established in south-central Nebraska in 1979 to determine where silver maple seed should be collected for use in the central Great Plains. Trees were evaluated for survival, height growth, and number of dominant stems per tree during their seventh growing season. Sources from eastern Nebraska, western Iowa, eastern Kansas, and northwest Missouri generally exhibited the greatest survival, height growth, and number of dominant stems. Height growth appears to be under stronger genetic control than stem number, suggesting that selection for height should take priority when selecting trees for biomass production. Geographic trends related to survival and height growth, but not stem number, were observed. Environmental or geographic factors that are strong predictors of seed source performance could not be identified. Planting the most locally produced seed is advisable for the central Plains. North. J. Appl. For. 5:180-184, Sept. 1988.

scholarly journals Performance of Green Ash Seed Sources at Four Locations in the Great Plains Region

2005 ◽  
Vol 22 (1) ◽  
pp. 54-58
Author(s):  
Wayne A. Geyer ◽  
Keith D. Lynch ◽  
John Row ◽  
Peter Schaeffer ◽  
Walter Bagley
Keyword(s):  
Great Plains ◽  
Strong Interaction ◽  
Height Growth ◽  
Cold Injury ◽  
Seed Source ◽  
Green Ash ◽  
Seed Sources ◽  
Ash Trees

Abstract Green ash trees from 10 seed sources were planted in a test in 1961 in four states of the Great Plains Region. After more than 20 years, height growth indicates a strong interaction between seed source and plantation location. Larger trees were from southerly sources within about three degrees of latitude of the plantation site. Beyond those limits, cold injury may result. Height and dbh age-age correlations were highly significant at 8 and 20+ years. Height and dbh correlated negatively with a decrease in latitude. North. J. Appl. For. 22(1):54–58.

scholarly journals Seed Source Variation in Morphology, Germination and Seedling Growth of Jatropha curcas Linn. in Central India

2005 ◽  
Vol 54 (1-6) ◽  
pp. 76-80 ◽  
Author(s):  
H. S. Ginwal ◽  
S. S. Phartyal ◽  
P. S. Rawat ◽  
R. L. Srivastava
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Jatropha Curcas ◽  
Growth Parameters ◽  
Central India ◽  
Seed Morphology ◽  
Seed Source ◽  
Moderate Intensity ◽  
Seed Sources ◽  
Source Variation

Abstract The aim of the study was to determine source variation in Jatropha curcas seeds collected from ten locations in Central India. A significant seed source variation was observed in seed morphology (colour, size and weight), seed germination (viability, germination percent, germination energy, germination value) and seedling growth parameters (survival percentage, seedling height, collar diameter, leave/plant, and seedling biomass). The seed source of Chhindwara (M.P.) was found as the best source in comparison to others. The phenotypic and genotypic variance, their coefficient of variability and broad sense heritability also showed a sizeable variability. This offers a breeder ample scope to undertake screening and selection of seed sources for the desired traits. Further, high percentage of heritability coupled with moderate intensity of genetic gain, was observed for seed germination traits, which signifies that germination is under strong genetic control and good amount of heritable additive genetic component can be exploited for improvement of this species.

Retrospective shoot growth analysis for three seed sources of loblolly pine

1991 ◽  
Vol 21 (3) ◽  
pp. 306-317 ◽  
Author(s):  
Constance A. Harrington
Keyword(s):  
Loblolly Pine ◽  
Height Growth ◽  
Growth Patterns ◽  
Seed Source ◽  
Tree Age ◽  
Annual Number ◽  
Cumulative Number ◽  
Stem Analysis ◽  
Seed Sources ◽  
Number Of Cycles

Height growth by year and by individual cycle on the terminal shoot was reconstructed from stem analysis for 45 loblolly pine (Pinustaeda L.) trees that were 35 years old. Sample trees represented three seed sources (Clark County, AR; Livingston Parish, LA; and Onslow County, NC), each of which had been planted at three installations (Arkadelphia, AR; Poplarville, MS; and New Bern, NC) located in the general geographic area where one of the seed sources had been collected. Stem analysis was facilitated by the development of a staining technique that enhanced recognition of the boundaries between individual height-growth cycles and between years. Both annual height growth and number of cycles produced varied with tree age, seed source, and installation. Number of cycles produced per year ranged from two to seven; maximum annual production of cycles per seed source was achieved between ages 3 and 10 years. Even between ages 30 and 35, trees still exhibited polycyclic behavior, producing two to five cycles annually. Annual height growth was greatest between ages 4 and 15; height growth declined with age more rapidly than annual number of cycles. The relationship at each installation between cumulative height and cumulative number of cycles showed that the tallest seed source (Onslow in all cases) was the one that had produced the greatest number of cycles. Shorter trees at the poorest site resulted from lower numbers of cycles produced and, particularly after the production of 50 to 65 cycles, shorter mean cycle length. For all three seed sources, mean height was greatest at the installation where the trees produced the most cycles. Height-growth curves for two of the installations crossed, demonstrating differences in height-growth patterns related to site characteristics.

scholarly journals THE EFFECT OF MYCORRIZA TO THE INCREASE OF PLANT HEIGHT AND STEM DIAMETER OF SENGON FROM VARIOUS SEED SOURCES

Agrivet ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 23
Author(s):  
Eva Vanodya Mutiarahma ◽  
Chimayatus Solichah ◽  
Tutut Wirawati ◽  
Liliana Baskorowati ◽  
Nur Hidayati ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Plant Development ◽  
Stem Diameter ◽  
Seed Source ◽  
Rust Disease ◽  
Seed Sources ◽  
Randomized Design ◽  
Α Level ◽  
Range Test

The purpose of this study was to determine the effect of sengon breed stock and mycorrhiza in increasing plant height and stem diameter. This research was conducted from April 2019 to September 2019 at the Center for Research and Development of Biotechnology and Forest Plant Development in Yogyakarta. Two-factor complete randomized design with 3 replications were used in this study. First factor is seed source, namely I1 = 1-1-63-1, I2 = 1-8-77-4, I3 = Malang (Bulk), and I4 = Solomon (Bulk) and second factor is the dose of mycorrhiza, namely M0 = without mycorrhiza, M 1 = mycorrhiza 5 g/plant, M2 = mycorrhiza 10 g/plant, M3 = mycorrhiza 15 g/plant. Plant height and stem diameter were collected for data. Variance analysis (ANOVA) were used at α level 5% and continued with Duncan's Multiple Range Test (DMRT) at α level 5%. The results of the study showed interactions on combinations that were in line with mycorrhiza doses on plants height and stem diameter of 8 week after planting. Parent 1- 8-77-4 gives the best results on plants height. Seed source 1-8-77-4, 1-1-63-1, and Solomon (Bulk) gives the best stem diameter results. Mycorrhizae can increase plant growth in terms of plant height and diameter.Keyword: mycorrhizae, gall rust disease, Sengon.

Explaining New Patterns in Family Leave Policies in Latin America: Competing Visions and Facilitating Institutions

2021 ◽  
Vol 63 (2) ◽  
pp. 100-121
Author(s):  
Marisa Hawley ◽  
Matthew E. Carnes
Keyword(s):  
Latin America ◽  
Family Policy ◽  
Maternity Leave ◽  
Family Leave ◽  
Political Landscape ◽  
Paternity Leave ◽  
Original Dataset ◽  
The Family ◽  
Policy Measures ◽  
Family Leave Policies

ABSTRACTRecent years have seen the rapid passage and modification of family leave policies in Latin America, a surprising trend, given the region’s historically conservative gender norms. This article argues that the rise of new paternity leave policies—as well as the modifications to longer-standing maternity leave policies—reflects contending visions of gender and the family, mediated by the institutions and actors that populate the region’s political landscape. Using an original dataset of family policy measures, this article finds that the factors facilitating the adoption of new, vanguard policies, such as paternity leave, function in ways different from those that shape the expansion of longer-standing policies, including maternity leave.

scholarly journals GGE Biplot as a novel tool for the investigation of marigold (Tagetes erecta L.) seedling growth on composted corn stalk as a substrate

2012 ◽  
Vol 3 (1) ◽  
pp. 8 ◽  
Author(s):  
Jianwei Hou ◽  
Guochen Yang ◽  
Lifei Chen ◽  
Chunli Zhao
Keyword(s):  
Seedling Growth ◽  
Physiological Parameters ◽  
Stem Diameter ◽  
Tagetes Erecta ◽  
Corn Stalk ◽  
Morphological Parameters ◽  
Seedling Vigor ◽  
Gge Biplot ◽  
Seedling Biomass ◽  
Ground Corn

This project investigated the feasibility of using ground corn stalks as the substrate to cultivate marigold (<em>Tagetes erecta</em> L.). Five treatments including peat moss, composted corn stalks and freshly ground corn stalks were tested for their effects on marigold seedling growth. Seedling quality was described by several morphological and physiological parameters. Data were analyzed using analysis of variance and GGE biplot analysis. There were significant differences among the treatments for several growth parameters, such as seedling biomass, root biomass, stem diameter, leaf area, seedling vigor, chlorophyll content, photosynthetic rate, root activity, stomatal conductance, and intercellular CO2 concentration. Treatment T3, which contained composted ground corn stalks, had the best effect on marigold seedling growth. The results showed that corn stalk was a good substrate for marigold seedlings. GGE biplot demonstrated the substrate effects on marigold seedling quality, and graphically displayed the interrelationships among morphological and physiological parameters. T3 treatment was the best because four morphological parameters, including seedling biomass, roots biomass, stem diameter and seedling vigor, along with six physiological parameters fall into this sector. These results were consistent with the results analyzed by Statistical Analysis Software. For morphological parameters, the correlations are complicated. For physiological parameters, they were all positively correlated between each of two parameters.

scholarly journals Improving Early Field Growth of Leyland Cypress Liners by Grading and Potting

2008 ◽  
Vol 26 (1) ◽  
pp. 35-38
Author(s):  
L. Eric Hinesley ◽  
Frank A. Blazich
Keyword(s):  
Height Growth ◽  
Stem Diameter ◽  
Stem Cuttings ◽  
Initial Size ◽  
Distinct Root ◽  
Field Growth

Abstract Stem cuttings of Leyland cypress [Callitropsis × leylandii (A. B. Jacks. & Dallim.) D. P. Little; syn. × Cupressocyparis leylandii (A. B. Jacks. & Dallim.) Dallim. & A. B. Jacks.] were rooted beginning May 2004. In February 2005, liners were sorted into four grades [1 = firm root ball, top to bottom, 2 = good root ball, but loose in the upper one-third; 3 = no distinct root ball, but with enough roots to survive when potted and grown in irrigated containers; and 4 = roots ≤ 2 cm (0.8 in) in length (discarded)]. Liners from Grades 1 and 2 were transplanted to the field April 2005. Additional liners of Grades 1, 2, and 3 were grown in 3.8-liter (1-gal) containers in a nursery during 2005, and field planted early September 2005. Height and stem diameter were recorded after 1 and 2 years. Containerizing affected stem diameter more than height. Growth during the first 2 years was proportional to initial size, indicating the benefits of grading. After 2 years, the largest plants were Grade 1 liners that went directly to the field April 2005, with no intermediate potting.

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