THE EFFECT OF GIVING GIBBERELLIN ON THE GROWTH AND YIELD OF CHERRY TOMATOES (Lycopersicon esculentum var. cerasiforme) IN VARIOUS OF PLANTING MEDIA WITH SUBSTRATE HYDROPONIC SYSTEMS

The efforts to increase cherry tomatoes production can be done by increasing the forming of ovaries. This effort can be helped by utilizing Zat Pengatur Tumbuh (ZPT) or Plant Growth Regulators. The Gibberellin is a growth regulator which has the function of flowering initiation and preventing the flowers from falling off. In addition to PGR, planting media is important for the growth of each plant. The planting media also has function as the root container, and the media which can absorb nutrient solution when it is doused or dripped. This research was conducted at The Greenhouse, Sukun Street, Karangbendo, Jaranan, Banguntapan, Bantul, Daerah Istimewa Yogyakarta. The study was conducted in May to August 2018. The experiment method uses polybag with Split Plot Design. In this experiment, there are two factors, and it repeated three times. The first factor as the main plot is the Plant Growth Regulators concentration of Gibberellin GA3 with the level (G0 : 0 ppm, G1 : 50 ppm, G2 : 75 ppm, G3 100 ppm). The second factor as the sub-plot is the type of planting media (M1: Husk Charcoal, M2: Malang Sand, M3: Husk Charcoal + Cocopeat (1:1)). The observation data is analyzed for its diversity at level of 5%. To find out the differences between the treatments, the method which is used is Duncan Multiple Range Test (DMRT) at level of 5%. The result shows that there is a significant effect of Gibberellin Plant Growth Regulators utilizing and types of planting media to the growth and yield of cherry tomatoes. The best Gibberellin concentration is 100 ppm, and the best media is the Husk Charcoal + Cocopeat (1:1).in the last 45 days. The second factor as a sub plot is browning prevention agents, named thidiazuron, activated charcoal, and vitamin C. Each combination of treatments was repeated 3 times. The result showed that there was the best combinations of treatments that is all combination of lighting and vitamin C 0,88 mg / l in terms of browning. The first 45 days lighting treatment gave the best result on the percentage of life, plantlet height, number of shoots, number of leaves, root length, and fresh weight. The treatment of vitamin C 0.88 mg / l gave the best result on the percentage of life, plantlet height, number of shoots, root length, number of roots, fresh weight, and dry weight.Keyword: Gherry tomatoes, substrate hydroponic, gibberellin, planting media.

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Pengaruh Aplikasi Biostimulant terhadap Pertumbuhan dan Produksi Selada (Lactuca sativa L.)

JURNAL BUDIDAYA PERTANIAN ◽

10.30598/jbdp.2020.16.2.109 ◽

2020 ◽

Vol 16 (2) ◽

pp. 109-117

Author(s):

Primarine R Tahapary ◽

Herman Rehatta ◽

Henry Kesaulya

Keyword(s):

Vitamin E ◽

Plant Growth ◽

Vitamin C ◽

Leaf Area ◽

Root Length ◽

Block Design ◽

Growth And Yield ◽

Leaf Number ◽

Root Number ◽

Fresh Weight

Lettuce is a type of vegetable that is very popular with the people of Indonesia. It contains healthy nutrients including minerals, vitamins, antioxidants, potassium, iron, folate, carotene, vitamin C and vitamin E. Biostimulants has the ability to stimulate new root formation, improve plant root systems, increase the number of tillers, and increase yield. Biostimulant concentration and site of administration play a role in providing nutrients for the needs of lettuce plants. To obtain the right concentration and place of administration for the growth and yield of lettuce, the experiment was carried out using a 2-factor Randomized Block Design. The first factor was the concentration of biostimulants (K) with 6 levels of concentration including: K0 (without giving biostimulants), K1 (giving biostimulants at a concentration of 1 mL/L of water), K2 (giving of biostimulants at 2 mL/L of water), K3 (giving biostimulants at 3 mL/L of water). K4 (giving biostimulant at 4 mL/L water), K5 (giving biostimulant at 5 mL/L water). The second factor was the site of administration (T), namely: T1 (through the leaves) and T2 (through the soil). The interaction between biostimulant concentration and administration gave a very significant effect on leaf number, crop fresh weight, root length and root number. Biostimulant concentration (K) gave the percentage of plant growth in the variables of plant height (34.29%) and leaf area (47.34%). Place of administration (T) gave percentage of plant growth the variables of leaf area (21.08%) and root wet weight (0.52%). The interaction of biostimulant concentration and administration place (K x T) gave the percentages of plant growth variables of leaf number (15.5%), plant fresh weight (52.33%), root dry weight (2.30%), root length (16.53%), and root number (108.5%). The best treatment in this study was the provision of biostimulant at a concentration of 2 mL/L of water that was given through leaves. Keywords: administration place, biostimulant, concentration, growth and production, lettuce ABSTRAK Selada merupakan jenis sayur yang sangat digemari oleh masyarakat Indonesia serta mengandung nutrisi yang sehat, yang meliputi mineral, vitamin, antioksidan, potassium, zat besi, folat, karoten, vitamin C dan vitamin E. Biostimulan mampu merangsang pembentukan akar baru, memperbaiki sistem perakaran tanaman, memperbanyak jumlah anakan, dan meningkatkan produksi tanaman. Konsentrasi biostimulan dan tempat pemberian merupakan interaksi yang berperan dalam menyediakan unsur hara bagi kebutuhan tanaman selada. Untuk memproleh konsentrasi dan tempat pemberian yang tepat bagi pertumbuhan dan produksi tanaman selada, dilakukan percobaan dengan menggunakan Rancangan Acak Kelompok 2 faktor. Faktor pertama adalah pemberian biostimulan (K) dengan 6 taraf konsentrasi meliputi: K0 (tanpa pemberian biostimulan), K1 (pemberian biostimulan dengan konsentrasi 1 mL/L air), K2 (pemberian biostimulan 2 mL/L air), K3 (pemberian biostimulan 3 mL/L air), K4 (pemberian biostimulan 4 mL/L air), K5 (pemberian biostimulan 5 mL/L air). Faktor kedua adalah tempat pemberian (T), yaitu: T1 (melalui daun) dan T2 (melalui tanah). Interaksi konsentrasi biostimulan berpengaruh sangat nyata terhadap variabel jumlah daun (helai), bobot segar tanaman (g), panjang akar (cm) dan jumlah akar (helai). Pada konsentrasi biostimulan (K) memberikan persentasepertumbuhan tanaman pada variabel tinggi tanaman (34,29%) dan luas daun (47,34%), Tempat pemberian (T) memberikan persentasepertumbuhan tanaman pada variabel luas daun (21,08%), bobot basah akar (0,52%), serta interaksi konsentrasi biostimulan dan tempat pemberian (KT) memberikan persentasepertumbuhan tanaman pada variabel jumlah daun (15,5%), bobot segar tanaman (52,33%), bobot kering akar (2,30%), panjang akar (16,53%), serta jumlah akar (108,5%). Perlakuan terbaik dalam penelitian ini adalah pemberian biostimulan konsentrasi 2 mL/L air dan diberikan melalui daun. Kata Kunci: biostimulan, konsentrasi, pertumbuhan dan produksi, selada, tempat pemberian,

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THE ROLL OF SOME PLANT GROWTH REGULATORS ON SHOOTS MULTIPLICATION OF STEVIA PLANTS IN VITRO

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v48i5.322 ◽

2017 ◽

Vol 48 (5) ◽

Author(s):

Al-Obaidy & Khierallah

Keyword(s):

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Culture Media ◽

Stevia Rebaudiana ◽

Shoot Multiplication ◽

Dry Weight ◽

Fresh Weight ◽

Number Of Shoots

This research was conducted to study the effect of some plant growth regulators on in vitro shoots multiplication of stevia (Stevia rebaudiana Bertoni). The experiments included tests of various combinations of KIN with IBA or IAA in the shoot multiplication. Results indicated that KIN at 1.0 mg. L-1 plus 0.3 mg. L-1 of IBA produced the highest number of shoots (3.5 shoots) while KIN at 1.5 mg. L-1 plus IBA at 1.0 mg. L-1 produced the lowest shoot length (1.14 cm). Hormone free medium produced the highest rate of the leaves number reached 28.56 leaves. KIN and IBA interaction increased fresh and dry weight significantly. Treatment contained 2.0 mg -1 KIN plus 0.3 mg. L-1 IBA produced the highest fresh weight (1.739 g) while 0.5 mg. L-1 KIN and 0.3 mg. L-1 IBA produced the highest dry weight (0.822 g). As for the effect of interaction between the IAA and KIN it was significant in the number of shoots formed. Interaction between 1.0 mg. L-1 KIN with 0.1 mg. L-1IAA produced the highest number of shoots (3.8 shoots). Shoots length reached 8.10 cm in the media with 0.3 mg. L-1 IAA only. The highest fresh weight (1.267 g) was achieved with the interaction between 1.0 mg. L-1 KIN and 0.3 mg. L-1 IAA while 0.5 mg. L-1IAA without KIN produced the highest dry weight reached 0.138 g. Shoots multiplication was improved by incorporation of the cytokinin TDZ in culture media. Shoots number, fresh and dry weights were increased significantly by adding 0.05 mg. L-1 of TDZ at present of 0.3 mg. L-1 of IBA giving 6.6 shoots, 0.974 g and 0.144 g respectively while shoots length decreased significantly as media without TDZ produced the highest shoots length reached 9.32 cm. The above results can adopt for the successful in vitro shoot multiplication of Stevia plants.

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