Rini Hermanasari
Balai Besar Penelitian Tanaman Padi, Jl. Raya 9, Sukamandi, Subang 41256 Telp. (0260) 520157

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Biofortifikasi Untuk Peningkatan Keragaman Populasi Dasar Padi Gogo Beras Khusus Yullianida, Yullianida; Hermanasari, Rini; Lestari, Angelita Puji; Hairmansis, Aris
AGRICOLA Vol 11 No 2 (2021): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v11i2.3733

Abstract

Biofortification is a process of increasing the nutritional content of agricultural commodities to meet the preferences of consumers who in recent years have begun to tend to have a healthy lifestyle. Specialty rice can include aromatic rice, sticky rice, pigmented rice and nutritious rice (rice containing zinc, iron or high anthocyanin). The limited superior varieties of upland rice causes the need to increase genetic diversity through the formation of based populations with conventional crossing. The hybridization block and F1 planting were conducted at MT 1 2019 in Muara Experimental Station-ICRR, Bogor. Crossing parents consist of advanced lines, introduced lines, local varieties and national varieties. Development of upland rice based population in MT 1 2019 resulted 64 crossbreeding combinations and 41 crossbreeding combinations among them aimed at obtaining special quality upland rice consisting of 24 single crosses, eight back crosses, seven top crosses and two double crosses. Whereas for F1 planting, upland rice for MT 1 2019 consisted of 129 numbers and 53 of them aimed at good quality rice. Of the 53 F1 numbers, 42 numbers were selected, which continued to become the bastar population (F2) in MT 2 2019 with the modification-bulk selection method.
Penyebab Kehampaan Gabah pada Persilangan Padi antar Subspesies Hermanasari, Rini; Aswidinnoor, Hajrial; Trikoesoemaningtyas, ,; Suwarno, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 2 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.254 KB) | DOI: 10.24831/jai.v36i2.20471

Abstract

ABSTRACTThe  objective  of  the  research  was  to  study  the  factors  effecting  unfilled  grains  in  intersubspecific  hybridization.  The  research  was  conducted  at  Muara, Bogor  from  April  2005  to  February  2006.  The  materials  used  in the research were  ten  F1 hybrid  combinations.  The evaluation was done by crossing the hybrids to Ciherang and it was resiprocal. A randomized block design with three replications were arranged in greenhouse. The results showed that five cross combinations produced higher unfilled grains and lower pollen fertility due to defective male gamets. The cross combinations that is Akitakomaci/IR64, Akitakomaci/Wayrarem, Akitakomaci/Salumpikit, Akitakomaci/Ketupat, and Akitakomaci/Kewal. Another five cross combinations produced normal pollen fertility but high unfilled grains. The high unfilled grains of four cross combinations was due to defective female gamets. The cross combination that is IR64/Sirendah Pulen, IR64/Lampung Putih, IR64/Lampung Kuning, and IR64/Mesir.  The other cross combination was due to defective male and female gamets  namely IR64/Brentel. Key words:  Unfilled grain, F1 hybrids, male gamets, female gamets
Seleksi dan Evaluasi Mutu Beras Padi Gogo Adaptif Lahan Kering Masam Yullianida; Lestari, Angelita Puji; Hermanasari, Rini; Hairmansis, Aris
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 2 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.858 KB) | DOI: 10.24831/jai.v49i2.35749

Abstract

Improvement upland rice lines are faced with the diversity of physical and ecobiological characteristics of dry land, including acidic-dry land. An alternative approach to optimize upland rice cultivation in acidic-dry land is the selection of adaptive varieties. The aim of this experiment was to obtain lines that have superior performance and yield on acidic-dry land, as well as good rice quality. A total of 36 lines of upland rice, including four check varieties, were selected at Tamanbogo, Lampung on rainy season (November 2017-March 2018). The genetic parameters estimation showed that flowering age, harvest age, weight of 1,000 grains and yield can be used as selection criteria. Based on these selection criteria, four lines were selected, namely B15231-MR-10-1, B15053F-PWR-2, B14908C-MR-1-25-1-3 and B15344B-TB-34. These lines had grain yields that were not significantly different from the best check variety Inpago 8 (3.84 ton ha-1), average resistant to leaf blast (score 1), highly resistant to neck blast (score 0), and moderately tolerant of Al. Additionally, these lines had medium grain with small-medium chalkiness (MMS-LMM), amylose content between 20-23% with soft-medium rice texture. One selected line, namely B15344B-TB-34, was identified as a red-pericarp rice. Keywords: aluminum toxicity, blast disease, drought, grain quality, selection criteria