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All Journal Indonesian Journal of Agricultural Science JURNAL PANGAN
Aris Hairmansis
Indonesian Center For Rice Research
Agriculture, Biological Sciences & Forestry Social Sciences

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DIGITAL IMAGE ANALYSIS USING FLATBED SCANNING SYSTEM FOR PURITY TESTING OF RICE SEED AND CONFIRMATION BY GROW OUT TEST Mira Landep Widiastuti; Aris Hairmansis; Endah Retno Palupi; Satriyas Ilyas
Indonesian Journal of Agricultural Science Vol 19, No 2 (2018): December 2018
Publisher : Indonesian Agency for Agricultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/ijas.v19n2.2018.p49-56

Abstract

The common method used for purity testing of rice seed is human visual observation. This method, however, has a high degree of subjectivity when dealing with different rice varieties which have similar morphology. Digital image analysis with flatbed scanning for purity testing of rice seed was proposed by investigating the morphology of rice seeds and confirmation by grow out test (GOT) in the field. Two extra-long seed varieties were used in this study including a red rice Aek Sibundong and an aromatic rice Sintanur. The identification on 14 parameters of morphological characteristics indicated that only six parameters were correlated, i.e. area, feret, minimum feret, aspect ratio, round, and solidity. The purity of rice seed can be effectively determined using digital image analysis of spikelet color and shape. Based on the discriminant analysis of the digital image the recognition rate of rice seed purity was higher than 99.2% for shape and 93.55% for color. The method, therefore, has a potential to be used as a complement in rice seed purity testing to increase the accuracy of human visual method and it is more sensitive than GOT.
GENETIC VARIABILITIES OF AGRONOMIC TRAITS AND BACTERIAL LEAF BLIGHT RESISTANCE OF HIGH YIELDING RICE VARIETIES Nafisah Nafisah; Celvia Roza; Nani Yunani; Aris Hairmansis; Tita Rostiati; Ali Jamil
Indonesian Journal of Agricultural Science Vol 20, No 2 (2019): December 2019
Publisher : Indonesian Agency for Agricultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/ijas.v20n2.2019.p43-54

Abstract

Hundred of high yielding and bacterial leaf blight (Xanthomonas oryzae pv. oryzae, Xoo) resistant rice varieties released since the 1960s are important sources of genetic materials for exploring superior genotypes. The study aimed to evaluate the genetic resistance of 177 rice varieties to Xoo and their agronomic traits. The evaluations were conducted at the Indonesian Center for Rice Research Experimental Station during the wet season (December 2015-March 2016). The bacterial leaf blight resistance was evaluated for Xoo pathotypes III, IV, and VIII using the clipping method. The genetic variation among genotypes was categorized as low (0–10%), medium (10–20%), and high (>20%), whereas the heritability was categorized as low (0-30%), medium (30-60%), and high (>60%). The variability of resistance to Xoo pathotypes, grain yield, and spikelet fertility was low, while the variability of plant height, productive tiller number, filled grain, and total spikelet was medium, and the variability of unfilled grain number was high. The 29 varieties  were categorized as superior based on their agronomic traits or resistance to Xoo pathotypes. In conclusion, Batutegi and Fatmawati were superior in the total spikelet number, while Rojolele and Inpari 2 were supreme in the thousand-grain weight. Dodokan had a very short maturity, and Inpari 24, Conde, Kalimas, Angke, Inpari 17, and Inpara 8 had the highest resistance to Xoo pathotypes. The study implies that the identified rice superior genotypes could be used as genetic materials to design cross combinations for higher yield potential and BLB resistance varietal improvement.
Pengembangan Varietas Unggul Padi untuk Lahan Terdampak Salinitas Aris Hairmansis
JURNAL PANGAN Vol. 29 No. 2 (2020): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v29i2.442

Abstract

Kadar garam yang tinggi pada tanah menjadi salah satu masalah utama pada pertanaman padi di lahan rawa pasang surut dan lahan sawah sepanjang pesisir pantai. Konsentrasi garam yang tinggi pada tanah dapat menyebabkan penurunan hasil bahkan dapat mengakibatkan gagal panen atau puso. Penanaman varietas yang toleran terhadap salinitas menjadi cara yang paling efisien untuk mengurangi dampak negatif kegaraman tanah terhadap keberlanjutan poduksi padi. Berbagai usaha telah ditempuh untuk memperbaiki toleransi tanaman padi baik melalui pemuliaan konvensional, maupun dengan bantuan teknologi seperti marka molekuler dan rekayasa genetik. Pengetahuan dalam mekanisme toleransi tanaman padi terhadap cekaman salinitas telah berkembang dengan pesat mendukung program perakitan varietas toleran. Sejumlah varietas unggul padi toleran salinitas telah dilepas di Indonesia dan potensial untuk diadopsi petani di lahan terdampak salinitas. Makalah ini akan membahas kemajuan yang telah diperoleh dalam studi terkait toleransi tanaman terhadap salinitas dan strategi pengembangan varietas padi toleran salinitas yang dibutuhkan untuk meningkatkan produktivitas padi di lahan-lahan pertanian yang terdampak salinitas di Indonesia.
Co-Authors Ali Jamil Celvia Roza Endah Retno Palupi Mira Landep Widiastuti Nafisah Nafisah Nani Yunani Satriyas Ilyas Tita Rostiati