Mapping of a gene responsible for the difference in amylopectin structure between japonica-type and indica-type rice varieties

2002 ◽  
Vol 104 (1) ◽  
pp. 1-8 ◽  
Author(s):  
T. Umemoto ◽  
M. Yano ◽  
H. Satoh ◽  
A. Shomura ◽  
Y. Nakamura
Keyword(s):  
Rice Varieties ◽  
The Difference ◽  
Amylopectin Structure

Difference of Amylopectin Structure Among Rice Varieties Differing in Grain Quality and Its Correlations with Starch Physicochemical Properties

2010 ◽  
Vol 36 (2) ◽  
pp. 276-284 ◽  
Author(s):  
Xiao-Peng HE ◽  
Chang-Lan ZHU ◽  
Ling-Long LIU ◽  
Fang WANG ◽  
Jun-Ru FU ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Grain Quality ◽  
Rice Varieties ◽  
Amylopectin Structure

Essential amino acids of starch synthase IIa differentiate amylopectin structure and starch quality between japonica and indica rice varieties

2005 ◽  
Vol 58 (2) ◽  
pp. 213-227 ◽  
Author(s):  
Yasunori Nakamura ◽  
Perigio B. Francisco ◽  
Yuko Hosaka ◽  
Aya Sato ◽  
Takayuki Sawada ◽  
...  
Keyword(s):  
Amino Acids ◽  
Indica Rice ◽  
Essential Amino Acids ◽  
Starch Synthase ◽  
Rice Varieties ◽  
Starch Quality ◽  
Japonica And Indica Rice ◽  
Amylopectin Structure

scholarly journals Mapping drought-induced changes in rice area in India

2019 ◽  
Vol 40 (21) ◽  
pp. 8146-8173 ◽  
Author(s):  
Gumma ◽  
Nelson ◽  
Yamano
Keyword(s):  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Human Life ◽  
Rice Varieties ◽  
Rice Area ◽  
Multi Temporal ◽  
Geospatial Datasets ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
The Difference ◽  
Matching Techniques

Rice is a staple food crop of India and is grown on 44 Mha (2011–12), 58.6% of which are irrigated. An inevitable phenomenon which looms over all aspects of human life and affects rice production in India is drought. Assessing drought damage using geospatial datasets available in the public domain, such as the Normalized Difference Vegetation Index (NDVI) derived from the Moderate Resolution Imaging Spectroradiometer (MODIS), can provide specific and local ecoregion information for developing drought-resistant rice varieties. Based on multi-temporal NDVI data and field observations in 2009, we developed a methodology to identify and map drought-affected areas in India. A long-term (10-year) average of NDVI during the rainy (kharif) season (June–October) was compared with NDVI from a known drought year (2002–03) to identify changes in rice area. Rainfall data from the Tropical Rainfall Monitoring Mission (TRMM) was used to support the drought analysis. Spectral matching techniques were used to categorise the drought-affected rice areas into three classes – severe, moderate, and mild based on the intensity of damage assessed through field sampling. Based on these ground survey samples, spectral signatures were generated. It was found that the rice area was about 16% less in the drought year (2002–03) than in a normal year (2000–01). A comparison of the MODIS-derived rice area affected by drought in 2002 for each state and district against the difference in the kharif season harvested rice area between 2000 and 2002 (from official statistics) revealed a substantial difference in harvested area in 2002 that was largely attributable to drought. An 84.7% correlation was found between the MODIS-derived drought-affected area in 2002 and the reduction in harvested area from 2000–01 to 2002–03. Good spatial correlation was found between the drought-affected rice areas and reduction of rice harvested areas in different rice ecologies, indicating the usefulness of such geospatial datasets in assessing abiotic stress such as drought and its consequences.

scholarly journals Penggunaan Berbagai Amelioran Terhadap Perbaikan Sifat Kimia Tanah Sawah Bukaan Baru dan Hasil Padi Lokal Tipe Baru

2018 ◽  
Vol 3 (4) ◽  
pp. 907-915
Author(s):  
Rozatul Mastura ◽  
Yadi Jufri ◽  
Muyassir Muyassir
Keyword(s):  
Open Field ◽  
Block Design ◽  
Chemical Properties ◽  
Rice Fields ◽  
Rice Varieties ◽  
Root Area ◽  
Randomized Block Design ◽  
New Type ◽  
The Difference ◽  
Total P

Abstrak. Sawah bukaan baru mempunyai berbagai masalah diantaranya mengandung Al dan Fe tinggi dan bisa meracuni tanaman serta kurangnya unsur hara P dan K. Jumlah Fe yang tinggi pada lahan sawah bukaan baru terkumpul pada daerah perakaran mengakibatkan akar tanaman tidak dapat berkembang dengan baik. Usaha untuk mengatasi hal tersebut dapat dilakukan dengan pemberian amelioran. Amelioran dapat mengikat Al dan Fe sehingga P tersedia bagi tanaman. Penelitian ini bertujuan memperoleh varietas padi lokal tipe baru yang berproduksi tertinggi dan amelioran terbaik pada lahan sawah bukaan baru. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan 9 perlakuan dan 3 kelompok sehingga terdapat 27 satuan unit percobaan. Faktor yang diteliti adalah galur mutan/varietas padi lokal tipe baru dan amelioran. Faktor galur mutan/varietas padi lokal tipe baru dengan terdiri atas: Sanberasi U1, Sanberasi U3 dan Inpari 30 sedangkan faktor amelioran terdiri atas: Kontrol, Arang Sekam dan Kompos Jerami. Untuk melihat perbedaan hasil perlakuan digunakan uji F dan dilanjutkan dengan uji (BNT0,05). Hasil penelitian menunjukkan perlakuan amelioran tidak berpengaruh nyata terhadap N-total, P-tersedia dan K-dd sawah bukaan baru. Varietas padi lokal tipe baru yang berproduksi tertinggi pada lahan sawah bukaan baru yaitu galur Sanberasi U3 dengan amelioran berupa arang sekam dengan hasil rata-rata 13,52 ton ha-1.The use of various ameliorants to improve the chemical properties of new open rice fields and new types of local riceAbstract.New opening rice fields have various problems including high Al and Fe content and can poison plants and lack of P and K nutrients. The high amount of Fe in new open field rice fields collected in the root area causes the roots of the plant to not develop properly. Efforts to overcome this can be done by giving amelioran. Amelioran can bind Al and Fe so that P is available for plants. This study aims to obtain the highest yielding new type of local rice varieties and the best ameliorants in new open field rice fields. This study used Factorial Randomized Block Design with 9 treatments and 3 groups so that there were 27 unit test units. The factors studied were new types of mutants / local rice varieties and ameliorants. The new type of mutant / local rice strain factor consists of: Sanberation U1, Sanberation U3 and Inpari 30 while ameliorant factors consist of: Control, Husk Charcoal and Cw. To see the difference in treatment results, the F test was used and continued with the test (BNT0.05). The results showed that ameliorant treatment had no significant effect on N-total, P-available and K-dd rice fields of new openings. The new type of local rice varieties that produce the highest in new open rice fields are the U3 Sanberation line with ameliorant in the form of husk charcoal with an average yield of 13.52 tons ha-1. 

scholarly journals The Physical and Chemical Characteristic of 3 Varietas of Germination Brown Rice (Mentik susu, Ciherang, and Pandan wangi)

2021 ◽  
Vol 5 (2) ◽  
pp. 63
Author(s):  
Dwi Eva Nirmagustina
Keyword(s):  
Brown Rice ◽  
Chemical Characteristic ◽  
Chemical Characteristics ◽  
Germinated Brown Rice ◽  
Rice Varieties ◽  
Germination Time ◽  
Physical And Chemical Characteristics ◽  
Germination Process ◽  
The Difference ◽  
Physical And Chemical

Brown rice has physical and sensory characteristics that are less favorable despite its high content of nutrition and phytochemical. The germination process is one way to improve and increase the acceptance of brown rice. The objective research was to determine germination time and varieties of brown rice on the physical and chemical characteristics of germinated brown rice. The research was conducted in RAL with 2 factors, germination time (24, 48, and 72 hours) and rice varieties (Mentik susu, Ciherang, and Pandan wangi). The data obtained were processed with analysis of variance to determine the effect of treatment on the parameters tested. If the effect is significant, then to determine the difference between treatments, a Tukey test is performed. Germination time of 24, 48, and 72 hours affected the color, germination, weight, dimensions of lenght, width, and thickness, bulk density, hydration capacity and swelling of germinated brown rice var. Mentik susu, Ciherang, and Pandan wangi. Germination time of 24, 48, 72 hours affected the chemical composition of BCG var. Mentik susu, Ciherang, and Pandan wangi. Based on observations of the physical and chemical characteristics of BCG var. Mentik susu, Ciherang, and Pandan wangi, germination time of 48 hours is recommended to do the germination with germination time of 48 hours compared to germination time of 24 and 72 hours.

scholarly journals PERBANDINGAN PENDAPATAN PETANI PADI SISTEM SENAM DUPA (SEKALI TANAM DUA KALI PANEN) DENGAN PETANI PADI SISTEM KONVENSIONAL DI KECAMATAN BERBAK KABUPATEN TANJUNG JABUNG TIMUR

2017 ◽  
Vol 2 (2) ◽  
pp. 69
Author(s):  
Rizki Gemala Busyra ◽  
Rogayah Rogayah
Keyword(s):  
Rice Production ◽  
Primary Data ◽  
Rice Farming ◽  
Rice Varieties ◽  
Rice Farmers ◽  
Intensive Farming ◽  
Degree Of Confidence ◽  
Spss Software ◽  
The Difference ◽  
Farmer Income

One of the efforts to improve rice production and productivity In Provinsi Jambi is by using Senam Dua (Sekali Tanam Dua Kali Panen). Senam Dupa means one-time cultivation with two harvests, a rice-farming approach in tidal land that combines traditional rice cultivation systems (Crop Index 100 local rice varieties) with intensive farming (high-yielding variety) in one overlay to achieve Crop Index 180. Kecamatan Berbak is one of the rice production centers in Tanjung Jabung Timur, Jambi. Senam Dupa has been introduced in order to increase rice production In Kecamatan Berbak. This is due to the tidal type of rice field in Kecamatan Berbak, and difficult water regulation, so it is not possible to plant two times. The increased rice production and productivity will be followed by increased farmers income. The purpose of this research are to know the income of rice farming that using Senam Dupa system and conventional system, and to see the difference of farmer income. This research uses primary data that obtained from farmer interviews with a questionnaire guide. Then the obtained data is tabulated and processed with SPSS software. The analysis methode used in this research is the difference of two means test methode. The results of this research indicate that Zhitung (5,099) ≥ Ztabel (1,645), so that the hypothesis stating that the income of Senam Dupa is higher than the conventional rice farmers is acceptable. Senam Dupa rice farmers income Rp. 2,050,588,7 /ha/month at 95% degree of confidence significantly higher than the income of conventional rice farmers that is equal to Rp. 1.770.083.06 /Ha/month.Keyword : Senam Dupa, Kecamatan Berbak, Farmer Income.Salah satu upaya peningkatan produksi dan produktivitas padi Di Provinsi Jambi adalah dengan cara Senam Dupa (Sekali Tanam Dua Kali Panen). Teknologi Senam Dupa diistilahkan dengan sekali menanam dua kali panen, yaitu sebuah pendekatan usaha tani padi di lahan pasang surut yang memadukan sistem budidaya padi tradisional (IP 100 varietas padi lokal) dengan pertanian intensif (varietas unggul) dalam satu hamparan sehingga mencapai IP 180. Kecamatan Berbak merupakan salah satu kecamatan sentra produksi padi yang terdapat pada Kabupaten Tanjung Jabung Timur, Jambi. Guna peningkatan produksi padi Di Kecamatan Berbak  telah diperkenalkan sistem Senam Dupa. Hal ini dikarenakan jenis sawah pada Kecamatan Berbak adalah sawah pasang surut, dan pengaturan tata air tidak mudah, sehingga tidak memungkinkan untuk melakukan penanaman dua kali. Peningkatan produksi dan produktivitas padi akan diikuti dengan peningkatan pendapatan petani. Tujuan penelitian adalah untuk mengetahui besarnya pendapatan usaha tani padi yang menerapkan sistem Senam Dupa dan sistem konvensional, serta melihat perbedaan pendapatan petani yang menerapkan sistem Senam Dupa dan petani yang menerapkan sistem konvensional. Penelitian ini menggunakan data primer yang didapatkan dari wawancara petani dengan panduan kuesioner, kemudian data yang diperoleh ditabulasi, dan diolah dengan software SPSS. Metode analisis yang digunakan adalah metode uji beda dua rata-rata. Hasil dari penelitian ini menunjukkan bahwa Zhitung(5,099) ≥ Ztabel (1,645) sehingga hipotesis yang menyatakan bahwa pendapatan petani padi sistem Senam Dupa yang lebih tinggi dari petani padi sistem Konvensional dapat diterima. Pendapatan petani padi sistem Senam Dupa Rp. 2.050.588,7 /Ha/bulan secara signifikan pada derajat kepercayaan 95% lebih tinggi dari pendapatan petani padi sistem Konvensional yaitu sebesar Rp. 1.770.083,06 /Ha/bulan.Kata Kunci : Senam Dupa, Kecamatan Berbak, Pendapatan Petani Padi

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