scholarly journals Practical studies on the injuries of cool weather in rice plant, : II. Temperature and heading date need to full development of rice grains.

1950 ◽  
Vol 19 (1-2) ◽  
pp. 57-61 ◽  
Author(s):  
M. Tanaka
Keyword(s):  
Rice Plant ◽  
Heading Date ◽  
Rice Grains ◽  
Full Development

scholarly journals Dissection of genetic architecture of rice plant height and heading date by multiple-strategy-based association studies

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Liyuan Zhou ◽  
Shouye Liu ◽  
Weixun Wu ◽  
Daibo Chen ◽  
Xiaodeng Zhan ◽  
...  
Keyword(s):  
Plant Height ◽  
Rice Plant ◽  
Genetic Architecture ◽  
Association Studies ◽  
Heading Date ◽  
Multiple Strategy

scholarly journals Preferensi petani terhadap keragaan padi (Oryza sativa) unggul untuk lahan sawah di wilayah Pangandaran dan Cilacap

Kultivasi ◽  
2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Muhamad Khais Prayoga ◽  
Neni Rostini ◽  
Mieke Rochimi Setiawati ◽  
Tualar Simarmata ◽  
Silke Stoeber ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Rice Plant ◽  
Descriptive Analysis ◽  
Average Height ◽  
Measuring Instrument ◽  
Rice Plants ◽  
Rice Grains ◽  
Quantitative Design ◽  
Important Character ◽  
Salinity Resistance

Abstract The object that conducted in this study is farmer's preferences of rice plant charac-teristics. This study was taken in 3 villages which are village Ciganjeng, village Pamotan, and village Rawaapu. The method used in this study was quantitative design with descriptive analysis. The respondents were 64 rice plant farmers. Measuring instrument used was questionnaire and interview. The result of this study showed that farmers has its own preference for the character of rice plants. Conclution of this study is farmers preferred rice plants which has an average height of plants, wide leaves, leave's surface, leave's angle, and rice straw's type; rice straw that has many branches; strong braches; has a lot rice grains; maturity of rice plants; lenght and wide grains size; non-aromatic; and tender texture. The farmers thought that leave's surface isn't an important character of a rice plants;  high of plants, leave's lenght and wide, leave's angle, rice straw's type, grain's lenght and wide, and rice's scent are quite important characteristics; branch's strenght, grain's quantity, and plant's maturity are an important characteristics; resistance to pests, disease resistance, drought resistance, resistance to inundation, salinity resistance, productivity, and rice texture are the most important characteristics. Keywords : preferences, farmer, superior varietiesObjek yang dikaji dalam penilitian ini adalah preferensi petani terhadap karakter tanaman padi. Tempat penelitian dilaksanakan di 3 desa (Desa Ciganjeng, Desa Pamotan dan Desa Rawaapu). Desain penelitian menggunakan desain kuantitatif dengan pendekatan analisis data secara deskriptif. Metode yang diperunakan adalah survey untuk mengumpulkan data dengan mengedarkan kuisioner dan melakukan wawancara. Jumlah petani yang diwawancarai yaitu 64 orang. Hasil dari penelitian ini adalah petani lebih menyukai tanaman padi yang memiliki tinggi tanaman, panjang daun, lebar daun, permukaan daun, sudut daun dan tioe malai yang sedang, cabang malai sekunder yang banyak, ketegaran batang yang kuat, jumlah anakan yang banyak, umur yang genjah, ukuran gabah yang panjang dan lebar, aroma yang tidak wangi, serta tekstur nasi yang pulen. Petani beranggapan bahwa karakter permukaan daun merupakan karakter yang tidak penting; karakter tinggi tanaman, panjang daun, lebar daun, sudut daun, tipe malai, panjnag gabah, lebar gabah, dan aroma tergolong karakter cukup penting; karakter ketegaran batang, jumlah anakan, dan umur tanaman merupakan karekter yang penting; karakter ketahanan terhadap hama, ketahanan terhadap penyakit, ketahanan terhadap kekeringan, ketahanan terhadap genangan, ketahanan terhadap salinitas, produktivitas, dan karakter tekstur nasi merupakan karakter yang sangat penting.Kata kunci : preferensi, petani, varietas unggul

Localization of acid phosphatases in root cap of rice plant

1991 ◽  
Vol 49 ◽  
pp. 224-225
Author(s):  
Y. R. Chen ◽  
Y. F. Huang ◽  
W. S. Chen
Keyword(s):  
Rice Plant ◽  
Developmental Stages ◽  
Uranyl Acetate ◽  
Root Cap ◽  
Plant Tissues ◽  
Acid Phosphatases ◽  
Root Tips ◽  
Buffer Solution ◽  
Cacodylate Buffer ◽  
Ethanol Series

Acid phosphatases are widely distributed in different tisssues of various plants. Studies on subcellular localization of acid phosphatases show they might be present in cell wall, plasma lemma, mitochondria, plastid, vacuole and nucleus. However, their localization in rice cell varies with developmental stages of cells and plant tissues. In present study, acid phosphatases occurring in root cap are examined.Sliced root tips of ten-day-old rice(Oryza sativa) seedlings were fixed in 0.1M cacodylate buffer containing 2.5% glutaraldehyde for 2h, washed overnight in same buffer solution, incubated in Gomori's solution at 37° C for 90min, post-fixed in OsO4, dehydrated in ethanol series and finally embeded in Spurr's resin. Sections were doubly stained with uranyl acetate and lead citrate, and observed under Hitachi H-600 at 75 KV.

Comparing Genetic Variation within Red Winter Wheat Populations with and without Image-Based Optical Sorter Selection

2019 ◽  
Vol 9 (2) ◽  
pp. 266-277
Author(s):  
Hussein M. Khaeim ◽  
Anthony Clark ◽  
Tom Pearson ◽  
Dr. David Van Sanford
Keyword(s):  
Genetic Variation ◽  
Fusarium Head Blight ◽  
Heading Date ◽  
Fusarium Head Blight Resistance ◽  
Gibberella Zeae ◽  
Mass Selection ◽  
Head Blight ◽  
Red Winter Wheat ◽  
Two Populations ◽  
Head Scab

Head scab is historically a devastating disease affecting not just all classes of wheat but also barley and other small grains around the world. Fusarium head blight (FHB), or head scab, is caused most often by Fusarium graminearum (Schwabe), (sexual stage – Gibberella zeae) although several Fusarium spp. can cause the disease. This study was conducted to determine the effect of mass selection for FHB resistance using an image-based optical sorter. lines were derived from the C0 and C2 of two populations to compare genetic variation within populations with and without sorter selection. Our overall hypothesis is that sorting grain results in improved Fusarium head blight resistance. Both of the used wheat derived line populations have genetic variation, and population 1 has more than population 17. They are significantly different from each other for fusarium damged kernel (FDK), deoxynivalenol (DON), and other FHB traits. Although both populations are suitable to be grown for bulks, population 1 seems better since it has more genetic variation as well as lower FDK and DON, and earlier heading date. Lines within each population were significantly different and some lines in each population had significantly lower FDK and DON after selection using an optical sorter. Some lines had significant reduction in both FDK and DON, and some others had either FDK or DON reduction. Lines of population 1 that had significant reduction, were more numerous than in population 17, and FDK and DON reduction were greater.

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