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Journal of Tropical Crop Science

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Published by Institut Pertanian Bogor

ISSN : 23560169 EISSN : 23560177 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Journal of Tropical Crop Science is an international journal publishing research related to tropical crops. Articles in the journal focus on in-vivo and in-vitro production and production environment, breeding, seed technology, physiology, postharvest, pest and pathology of cereals, vegetables, fruits, ornamentals, medicinal and plantation crops; soil, landscape, turf and agro ecology management under tropical conditions.

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Articles 7 Documents

Search results for , issue "Vol 1 No 1 (2014): Journal of Tropical Crop Science" : 7 Documents clear

Estimation of Genetic Parameter for Quantitative Characters of Pepper (Capsicum annuum L.) Syukur, Muhamad; Rosidah, Syaidatul
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The research was conducted at Leuwikopo Experimental Field and Plant Breeding Laboratory of IPB, Dramaga, Bogor, West Java, Indonesia from October 2012 to April 2013. Crossing population between C15 and C2 genotype were used to study genetic parameters for quantitative characters in pepper. All the characters were not controlled by maternal effect, except fruit length. Broad-sense heritability were high for plant height, stem diameter, dichotomous height, days to flower, days to harvest; and medium for fruit length and diameter. Narrow-sense heritability was high for stem diameter, dichotomous height, days for flowering; medium for plant height, days to harvest; and low for fruit length and diameter. The ratio of additive variance was high for all the characters, except for fruit length and fruit diameter.Keywords: heritability, heterosis, heterobeltiosis, additive variance, dominant variance

Irrigation Volume Based on Pan Evaporation and Their Effects on Water Use Efficiency and Yield of Hydroponically Grown Chilli Sulistyono, Eko; Juliana, Abe Eiko
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

This study was conducted to determine irrigation volume based on pan evaporation and their effects on growth, yield, irrigation water use efficency (IWUE) of chilli grown in sandponic system in the greenhouse. The amount of water used was based on pan evaporation. Irrigation treatments consisted of four coefficients, i.e. 0.5, 1, 1.5, 2 Epan. Plants were watered daily until soil reached field capacity during the first week. Irrigation treatments were applied on the second week until four months later. Total irrigation quantities varied from 9.4 to 37.8 L. plant-1. Chilli fruit yield varied from 3.98 to 90.51 g.plant-1. The highest total fruit yield and IWUE was obtained from 2 Epan treatment. Irrigation treatment had significant effects (P<0.01) on yield and there were positive linear relations between the yield and the amount of irrigation water applied. Irrigation volume significantly increased plant height, number of lateral branches, and number of leaves (P<0.01).Keywords: plant height, lateral branches, fruit

Evaluation of Commercial Sunflower (Helianthus annuus L.) Cultivars in Bogor, Indonesia for Ornamental and Nursery Production Aisyah, Syarifah Iis; Khotimah, Khotimah; Krisantini, Krisantini
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

A wide range of imported ornamental sunflower seeds have been marketed in Indonesia. A field evaluation was conducted on seven sunflower cultivars to investigate their germination, growth and development in humid tropical environment in Bogor, West Java, Indonesia and to determine their potential uses. Most of the tested cultivars, except for ‘Sungold Double’ and ‘Velvet Queen’, demonstrated good germination and growth. ‘Eclipse’ was highly susceptible to stem rot, which resulted in only 30% of the plants survived. ‘Little Leo’, ‘Teddy Bear’ and ‘Sungold Double’ were naturally compact, dwarf, and produced attractive blooms so they might be suitable as pot plants. ‘Hallo’, ‘Velvet Queen’, ‘Sunburst’, and ‘Eclipse’s plant height were more than 100 cm, had long stem and large blooms. These cultivars might be suitable as landscape plants.Keywords: morphological characteristics, West Java, pot plants

Tropical and Subtropical Fruits in India Mitra, Sisir
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

India is the second largest producer of fruits in the world with an annual production of 81.2 million tonnes contributing 12.6% of world fruit production next only to China (21.2%). Of late, with growing population and realization of commercial and nutritional values, the demand and requirement for fruits has increased manifold globally and so is in India. Since then, India has managed a steady growth in area expansion and production of fruits. Even in 2012-2013, increase in area and production of fruits in India was 4.1 and 6.4 times over 2011-2012 Of these, tropical and subtropical fruits contribute a major share, and the important fruits are mango, banana, papaya, citrus, guava, pineapple, litchi, sapota and pomegranate. Among the minor fruits (less area in cultivation than the major fruits) are jackfruit, bael, aonla, carambola, syzygiums, passion fruit and tamarind are also growing in many states of India.

Different Growth Partitioning and Shoot Production of Talinum triangulare Treated with Organic and Inorganic Fertilizer Aziz, Sandra A.; Mualim, Leo; Farchany, Sitta Azmi
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Talinum triangulare or waterleaf is an underutilized tropical plant, mostly found as weeds, and has been used more as medicinal plant than as vegetable in Indonesia. The study of Talinum triangulare cultivation has been explored to increase the shoot production as functional vegetables. The effects of organic fertilizer applications at 0.50, 0.75, 1.00, 1.25 and 1.50 of the standard rate on waterleaf growth were tested in a Leuwikopo research station, Bogor, West Java, Indonesia. Standard rate of organic fertilizer consisted of 12.3 t..ha-1 of cow manure, 226.8 kg. .ha-1 of guano, and 5.5 t.ha-1 of rice hull ash that is equal to 100 kg urea, 60 kg SP-36 and 100 kg KCl.ha-1. Net assimilation rate (NAR) of the organic fertilizer-treated plants was lower than the inorganic fertilizer-treated with plant at two to four weeks after planting (WAP). However, the plants treated with 0.75-1.25 organic fertilizer had a higher NAR than those treated with inorganic fertilizer at four to six WAP. Plants treated with 0.75 rate of organic fertilizer had similar relative growth rate (RGR) to plants treated with the inorganic fertilizer at two to four WAP, whereas plants treated with 1.00, 1.25 and 1.50 standard rate had higher RGR than plants treated with inorganic fertilizer at 4-6 WAP. Plants treated with 1.50 organic fertilizer rate had 34.55% more marketable shoots compared to those treated with inorganic fertilizer whereas those treated with 0.50 rate of organic fertilizer had 179.54% at 6 WAP. The percentage of marketable shoots to total fresh weight of the organic fertilizer-treated plants was lower than the inorganic fertilizer-treated plants.Keywords: Talinum triangulare, leafy vegetables, organic

Heliconia Society Cultivar Registration Skinner, Dave; Hintze, Jan; Brunner, Bryan
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The Heliconia Society International (HSI, website: www.heliconia.org) is a non-prot corporation formed in 1985 because of rapidly developing interest around the world in these plants and their close relatives.The purpose of HSI is to increase the enjoyment and understanding of Heliconia and related plants (in the families Cannaceae, Costaceae, Lowiaceae, Marantaceae, Strelitziaceae, and Zingiberaceae) of the order Zingiberales through education, research and communication. Interest in Zingiberales and information on the cultivation and botany of these plants is rapidly increasing. HSI will centralize this information and distribute it to members.

Cloning and Characterization of P5CS1 and P5CS2 Genes from Saccharum officinarum L. under Drought Stress Iskandar, Hayati Minarsih; Widyaningrum, Dwiyantari; Suhandono, Sony
Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Increasing world sugar demand might be fulfilled with land extensification which include the use of dry area. Development of drought tolerance and high productivity sugarcane variety could be achieved by plant genetic engineering. Under drought condition, proline will be accumulated and functioned as an osmoregulator in plant cells. ∆1-pyrroline-5-carboxylate synthase (P5CS) is one of the important enzymes in proline biosynthesis. This enzyme is encoded by P5CS gene family. We cloned two homologous P5CS genes from sugarcane, SoP5CS1 (Accession Number : KF178299) and SoP5CS2 (Accession Number : KF178300), which encode 729 and 716 amino acid polypeptides. The identity between these two genes was 74% based on nucleotide sequences. The SoP5CS1 gene had 98% identity with SbP5CS1 (Accession Number : GQ377719.1) and SoP5CS2 had 99% identity with SaP5CS (Accession Number : EF113257.1). In this experiment, sugarcane plantlets were exposed to medium containing PEG 6000 (40%) for 12, 24, 48, and 72 hours. Proline concentration was measured after treatment and genes expression were analyzed by real time-qPCR. The results showed that the proline concentration was increased 12 folds (9.8 umol.g-1) after 48-hours stress treatment. The highest expression of SoP5CS1 occured at 24-hours treatment with approximately 16 times from plant without PEG (control plant) and decreased gradually at 48 and 72 hours treatment. The highest expression of SoP5CS2 occured at 24-hours drought stress with approximately 3.6 folds compared to control. In drought treatment, the expression level SoP5CS1 was higher than SoP5CS2 and has increased significantly at 12-hours treatment. It is suggested that the SoP5CS1 gene contributes more significantly to the production of proline during drought stress than SoP5CS2. Hence, SoP5CS1 could potentialy be used as a marker to screen sugarcane variety for drought tolerance and for the development of transgenic plant tolerant to drought.Keywords: cloning, drought, expression, P5CS, sugarcane

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Lianah lianah

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