Intergeneric somatic hybrids of rice [Oryza sativa L. (+) Porteresia coarctata (Roxb.) Tateoka]

1999 ◽  
Vol 99 (3-4) ◽  
pp. 570-577 ◽  
Author(s):  
N. B. Jelodar ◽  
N. W. Blackhall ◽  
T. P. V. Hartman ◽  
D. S. Brar ◽  
G. Khush ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Somatic Hybrids ◽  
Oryza Sativa L ◽  
Porteresia Coarctata

scholarly journals Characterization of Progenies from Intergeneric Hybridization Between Oryza sativa L. and Porteresia coarctata (Roxb.) Tateoka

2017 ◽  
Vol 27 (1) ◽  
pp. 63-76
Author(s):  
Tasmia Islam ◽  
Sudip Biswas ◽  
Umme Habiba Mita ◽  
RH Sarker ◽  
M Sazzadur Rahman ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Ssr Markers ◽  
Oryza Sativa L ◽  
Intergeneric Hybridization ◽  
Chromosome Loss ◽  
Salt Tolerant ◽  
Porteresia Coarctata ◽  
Maternal Parent ◽  
Hybrid Plants ◽  
Coastal Belt

Porteresia coarctata (Roxb.) Tateoka is an endemic halophyte growing all over the coastal belt of Bangladesh, propagating through rhizomes and setting a few ricelike grains. So exploiting the genetic potential of this wild rice as salt tolerant donor in possible wide crosses with rice (2n = 24) could be useful. We attempted intergeneric hybridization between Oryza sativa L. and P. coarctata. The survival rate of hybrid progenies in embryo culture was low but among them 2 hybrid plants were successfully matured from the intergeneric cross between the cultivated induced tetraploid of rice, Latisail (2n = 4x = 48) and P. coarctata (2n = 48). The hybrid plants could be successfully established in soil and were not like either of the parents in morphology although some of their features were similar to their maternal parent, Latisail (4x). Both of the hybrids were investigated through physiological analysis under salinity stress and molecular analyses with rice specific SSR markers. Molecular analysis of the F1 DNA with only 3 SSR markers, RM581, RM20224 and RM25271, out of 36 others tested, showed bands specific to both of the parents, while all had common bands with the maternal parent. Dendrogram analysis of the hybrids with the 36 SSR markers, show that P. coarctata forms a different clade and is clearly separated from Latisail and the hybrids. The putative hybrids however made a subgroup with Latisail. These observations could be possibly explained if chromosome loss of the paternal parent had occurred or may be it was a pleotropic effect of intergeneric hybridization. Physiological screening of the hybrid progenies at the F2 generation in seedling stage showed better result in leaf damage score (LDS) and salinity tolerance than their maternal parent Latisail (4x) at 150 mM salt stress for 10 days. F2 plants from one of the hybrid plants (H‐2) showed better performance but there was a large variation in response from each of the individual progenies. So, it is likely that some of the salt tolerant characteristics of the pollen parent might have been transferred to the recipient Latisail (4x). For introgression of better salt tolerant loci from P. coarctata, more wide hybrids will need to be produced and repeatedly crossed with P. coarctata.Plant Tissue Cult. & Biotech. 27(1): 63-76, 2017 (June)

Seed development, the accumulation of abscisic acid and desiccation tolerance in the aquatic grasses Porteresia coarctata (Roxb.) Tateoka and Oryza sativa L.

1993 ◽  
Vol 3 (2) ◽  
pp. 97-103 ◽  
Author(s):  
C. D. Aldridge ◽  
R. J. Probert
Keyword(s):  
Oryza Sativa ◽  
Abscisic Acid ◽  
Seed Development ◽  
Desiccation Tolerance ◽  
Oryza Sativa L ◽  
Complete Loss ◽  
Germination Capacity ◽  
Stages Of Development ◽  
Porteresia Coarctata ◽  
Per Se

AbstractSeeds of Oryza sativa L. (desiccation tolerant, orthodox) completed each of five distinct stages of development approximately 7 days earlier than seeds of Porteresia coarctata (Roxb.) Tateoka (desiccation intolerant, recalcitrant), despite the fact that O. sativa plants matured under cooler conditions. Isolated embryos of O. sativa were more sensitive to rapid desiccation at 6 days post anthesis (DPA) compared with naked caryopses. More than 90% of the latter were desiccation tolerant at 8 DPA and at all stages tested the germination capacity and/or rate of germination was greater following drying. In contrast, drying resulted in a complete loss of viability in seeds of P. coarctata at all stages tested. In both species, abscisic acid (ABA) began to accumulate in embryos mid-way through development. At the respective peaks, the concentration of ABA in P. coarctata was twice that recorded in O. sativa confirming that ABA levels per se do not determine desiccation tolerance in seeds. The possibility that desiccation tolerance is linked to sensitivity to ABA is discussed.

Plantlet regeneration from somatic hybrids of rice (Oryza sativa L.) and barnyard grass (Echinochloa oryzicola Vasing)

1987 ◽  
Vol 210 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Rie Terada ◽  
Junko Kyozuka ◽  
Soryu Nishibayashi ◽  
Ko Shimamoto
Keyword(s):  
Oryza Sativa ◽  
Somatic Hybrids ◽  
Oryza Sativa L ◽  
Plantlet Regeneration ◽  
Barnyard Grass

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo

1970 ◽  
Vol 5 (3) ◽  
pp. 391-403
Author(s):  
Wiwik Winarti ◽  
Eva Sartini Bayu ◽  
Revandy Iskandar Damanik
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
International Rice Research Institute ◽  
Research Institute

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

Correlation Studies on Grain Yield and its Component Traits in Rice (Oryza sativa L.)

2012 ◽  
Vol 2 (11) ◽  
pp. 13-14
Author(s):  
R. ARULMOZHI R. ARULMOZHI ◽  
◽  
Dr. A. MUTHUSWAMY Dr. A. MUTHUSWAMY
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Correlation Studies ◽  
Component Traits

Aplikasi Abu Sekam pada Padi Gogo (Oryza sativa L.) terhadap Kandungan Silikat dan Prolin Daun serta Amilosa dan Protein Biji

2011 ◽  
Vol 16 (1) ◽  
Author(s):  
Ahadiyat Yugi Rahayu ◽  
Tri Harjoso
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Screen House

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh aplikasi abu sekam terhadap kandungan prolin dan silikat daun serta kualitas hasil yaitu protein dan amilosa biji padi gogo dan hubungan korelasi antar keempat komponen tersebut pada kondisi pertanaman 80 persen kapasitas lapang pada skala pot. Penelitian dilakukan di polibag dalam screen house Fakultas Pertanian Unsoed dengan menggunakan rancangan acak kelompok pola faktorial dengan faktor varietas (Situ patenggang, Limboto, Towuti, Batutegi dan Aek sibundong) dan faktor abu sekam (0, 2, 4, 6 t/ha), diulang tiga kali. Hasil penelitian menunjukan bahwa pemberian abu sekam dosis 2−6 t/ha mampu meningkatkan kandungan silikat daun antara 18,49−29,43% dan menurunkan kandungan amilosa biji pada lima varietas sekitar 4,19−6,92%. Pemberian abu sekam dosis 2−6 t/ha mampu meningkatkan kandungan prolin daun antara 27,56−70,63% dan protein biji antara 2,35−16,71%. Antarvarietas menunjukan bahwa kandungan prolin tertinggi dihasilkan oleh varietas Batu tegi 18,58 persen dan protein biji pada varietas Situ patenggang 9,55%. Terdapat korelasi antar karakter fisiologis yaitu antara silikat-prolin (0,62) dan kandungan protein-amilosa biji (-0,78).

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