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Yuni Widyastuti
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Agriculture, Biological Sciences & Forestry

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Korelasi dan Sidik Lintas Karakter Agronomi Padi Hibrida Nita Kartina; Bayu Pramono Wibowo; Yuni Widyastuti; Indrastuti Apri Rumanti; . Satoto
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 2 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.951 KB) | DOI: 10.18343/jipi.21.2.76

Abstract

Two approachment to increase yield productivity with new variety throught new plant type (NPT) concept and heterosis exploitation of hybrid rice. The research was to evaluated yield and yield component of 36 hybrid rice genotypes in preliminary yield trial at two locations. The experiment was conducted in the second season MT (II) 2013 at the Sukamandi experimentalstation, Subang, West JavaProvince and in Batang, Central Java Province by usingRandomized Complete Block Design (RCBD). The material used were36hybrid rice genotypes and four check varieties namely Hipa8, Hipa Jatim2,Ciherang, and Longping Optima. The results showed that grain yield had been effected by location, genotypes, and both interactions. There were two hybrid rice genotypes that give high yield potential than four check varieties, and one hybrid rice genotype significantly different from Longping Optima. Those hybrids were GMJ6/CRS519 (9.9 t/ha) and GMJ14/CRS757 (9.5 t/ha), and A1/CRS518 (6.2 t/ha). Based on path analysisnumber of productive tiller and number of total grain per panicle have direct effect to yield with path coefficient as 0.4028 and 0.2153. Length panicle and seed set also gave positif and significant direct effect to yield as 0.095 and 0.0956, so these characteristics could be used as selection criteria. 
Pengaruh GA3 dan Beberapa Jenis Larutan Kimia Terhadap Bunga dan Karakter Morfologis Tetua Padi Hibrida Yuni Widyastuti; Sri Wahyuni; Indria Wahyu Mulsanti
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 3 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (714.398 KB) | DOI: 10.18343/jipi.21.3.153

Abstract

The aim of the present study is to optimize the dose of GA3 and substitution chemicals that affect on floral and morphological traits of parental lines for hybrid rice seed production. The experiment was conducted at glass house on field station Sukamandi, Indonesian Center for Rice Research, during April-August 2010. The experimental material comprising both the parental lines of hybrid Hipa 7 i.e. IR58025A and IR40750 were treated with 10 treatments of different kind of GA3, chemicals, and one untreated check was grown in randomized block design with three replications. The results indicated that a liquid GA3 60 ppm, urea 2%, phosphate 1%, and glycine 40 ppm could influence some of the characters favoring outcrossing i.e stigma exertion, panicle exertion, anther and filament length. These chemical (urea 2%, phosphate 1%, and glycine 40 ppm) showed the possibility of the economizing cost of seed production and substitute of GA3
Pengaruh Perbedaan Waktu Tanam Tetua Padi Hibrida dan Aplikasi Zat Pengatur Tumbuh terhadap Hasil Benih F1 HIPA 8 SRI WAHYUNI; TITA RUSTIATI; YUNI WIDYASTUTI
Agrotrop : Journal on Agriculture Science Vol 3 No 2 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (59.167 KB)

Abstract

The Effects of Planting Time of TheParental Hybrid Rice and Plant Growth RegulatorApplication on Seed Yield of F1 HIPA 8.Research the effect of planting time of parental lines andapplication of plant growth regulators (GA3and glysine) on seed yield of F1 hybrid rice had beenconducted at The Indonesian Centre of Rice Research on 2010. The objective of the study was to findout combination of plating time and application of plant growth regualtors to get high seed yield ofhybrid rice. Seeds of parental lines Hipa 8 were planting in row ratio 2R:8A at Cilandak, Indramayu onthe dry season of 2010. Treatments to improve seed yield of hybrid rice consisted of (a) planting timeof parental lines (CMS and R), and (b) application of plant growth regualators (GA3 CG1 (commercialgrade) 60 ppm, GA3 CG2 94 ppm, Glysine 40 ppm and control (untreated). Plant growth regualatorwere applied at three times i.e. heading time, 5% plant flowering and 20% plant flowering. Variableevaluated consisted of: plant growth, yield component and seed yield. Result of the exeperiment showedthat tiller number per hill and plant height at vegetatif stage were not affected by treatments. TreatmentA1B2 and A2B2 significantly improved panicle exercition, plant height of restorer and also seed yield.Rice plant treated with A1B2 (planting times of restorer were 12, 15, and 18 days after CMS andapllication GA3 CG1 60 ppm) showed the highest seed yield, followed by A2B2 (planting times ofrestorer were 13, 17 and 21 days after CMS and application of GA3 CG1 60 ppm).
Co-Authors . Satoto Bayu Pramono Wibowo Indrastuti Apri Rumanti Indria Wahyu Mulsanti Nita Kartina Sri Wahyuni TITA RUSTIATI