Induced mutations by gamma ray irradiation to Argomulyo soybean (Glycine max) variety

Hanafiah DS, Trikoesoemaningtyas, Yahya S, Wirnas D. 2010. Mutasi induksi irradiasi sinar gamma pada varietas kedelai Argomulyo (Glycine max). Nusantara Bioscience 2: 121-125. Induksi tanaman dengan irradiasi sinar gamma merupakan salah satu cara untuk meningkatkan keragaman genetik tanaman. Penelitian ini menggunakan irradiasi sinar gamma pada tingkat atau dosis rendah (mutasi mikro). Tujuan penelitian ini untuk mengetahui respon pemberian tingkat irradiasi mikro sinar gamma pada benih kedelai. Benih kedelai [Glycine max (L) Merr] yang diuji adalah kedelai varietas Argomulyo yang diirradiasi sinar gamma dengan dosis 0 Gray, 50 Gray, 100 Gray, 150 Gray dan 200 Gray. Keragaman yang diperoleh dari setiap peubah amatan yang diperoleh pada generasi M1 dan M2 menunjukkan bahwa perlakuan irradiasi dapat mempengaruhi pertumbuhan dan perkembangan tanaman secara kualitatif dan kuantitatif, yang akhirnya akan mempengaruhi produksi tanaman. Variasi fenotipe pada tanaman kedelai generasi M2 tertinggi rata-rata terjadi pada perlakuan 200 Gray. Hasil penelitian menunjukkan bahwa irradiasi sinar gamma pada dosis 200 Gray efektif menyebabkan terjadinya keragaman genetik tanaman. Kata kunci : mutasi induksi, mutasi mikro, irradiasi sinar gamma, kedelai varietas Argomulyo

Prakarya dan kewirausahaan SMA/MA/SMK/MAK kelas X semester 1

Buku ini membagi materi menjadi empat pokok pembahasan, yaitu kerajinan dan wirausaha tekstil; rekayasa dan wirausaha alat komunikasi sederhana; budidaya dan wirausaha tanaman pangan; pengolahan dan wirausaha pengawetan bahan nabati dan hewan

Seleksi Segregan Gandum (Triticum Aestivum L.) pada Dataran Tinggi

Pedigree selection is a method of selection used in segregating populations which takes the expertise of breeders in achieving the desired goal. This method is implemented on the early generations with a high degree of segregation and is generally performed on highly heritable traits. The purpose of this research was to study the performance of F3 generation segregants and to estimate the genetic parameters to be used for identification and selection of wheat segregants under optimum environmental condition. The research was carried out at the experiment field of Research Institute for Ornamental Crops, in Cipanas from May to September 2012. Genetic material used were 58 F3 family and six check varieties, namely Dewata, Selayar, Oasis, Rabe, Basribey, and HP 1744. The experiment used an augmented design. Results of analysis of variance showed that the family effect was significant for days to flowering, days to harvest, percentage of empty florets, number of grains per panicle, grain weight per panicle, number of seeds per plant and seed weight per plant. High heritability estimates were found in days to flowering, days to harvest, seed filling period, percentage of empty florets, number of grains per panicle, grain weight per panicle, number of seeds per plant, and seed weight per plant. These characters are suitable for yield improvement of tropical highland wheat due to its high heritability values. The mean value of F3 generation changes subsequent to selection either based on grain weight per plant, or based on number of productive tillers, number of grain per panicle, and grain weight per plant

Analisis Daya Hasil Lateks Dan Heritabilitas Karakter Kuantitatif Dari Beberapa Genotipe Karet Pp/07/04

Tujuan penelitian ini adalah untuk mempelajari karakter pertumbuhan, daya hasil lateks dan heritabilitas karakter kuantitatif beberapa genotipe karet PP/07/04. Sebanyak lima belas genotipe karet dan dua klon pembanding PB 260 dan RRIC 100 diuji pada penelitian ini. Pengujian genotipe tersebut dibangun di Kebun Percobaan Balai Penelitian Sungei Putih, Pusat Penelitian Karet pada tahun 2004, yang terletak di Kabupaten Deli Serdang - Provinsi Sumatera Utara. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan tiga ulangan. Hasil penelitian menunjukkan bahwa genotipe berpengaruh nyata terhadap dua belas karakter yang diamati yaitu lilit batang, tebal kulit, jumlah cincin pembuluh lateks, diameter sel pembuluh lateks, panjang alur sadap, kecepatan aliran lateks, indeks penyumbatan, kadar fosfat anorganik, kadar sukrosa, kadar thiol, kadar karet kering, dan daya hasil lateks. Berdasarkan karakter pertumbuhan dan daya hasil lateks menunjukkan bahwa genotipe HP 92/309 memiliki potensi hasil lateks tinggi, sedangkan genotipe HP 92/542 memiliki hasil lateks tinggi dan pertumbuhan jagur. Dua belas karakter yang diamati memiliki nilai heritabilitas tinggi dengan nilai h2bs antara 0,52 – 0,95. Hal ini menunjukkan bahwa karakter-karakter tersebut lebih dipengaruhi oleh faktor genetik. Diterima : 5 April 2016 / Direvisi : 30 Juni 2016 / Disetujui : 3 Agustus 2016 How to Cite : Sayurandi, S., Wirnas, D., & Woelan, S. (2016). Analisis daya hasil lateks dan heritabilitas karakter kuantitatif dari beberapa genotipe karet PP/07/04. Jurnal Penelitian Karet, 34(1), 1-12. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/22

Kendali Genetik Toleransi Kekeringan pada Padi Sawah (Oryza Sativa L.)

Drought has become a main barrier of rainfed rice in dry climate and short wet season areas. Growing drought-tolerance varieties is a practical approach to minimize yield lost of rice by the drought stress condition. The aims of this research were to examine the inheritance of drought tolerance character, to identify selection traits, and to estimate genetic gain for drought tolerant on lowland rice. Four rice varieties, i.e., Jatiluhur, Mentik Wangi, IR64, Way Apo Buru, were fully diallel crossed. The parent varieties and the F1\u27s were grown at Sawah Baru, Dramaga experimental field in two irrigation treatments, optimum and sub optimum where irrigation was applied until three weeks after transplanting. A randomized complete block design with three replications for each irrigation treatment was applied to the experiment. The results showed that there is a significant maternal effect on tiller number. The values of additive variance were higher than the dominance for all other characters except tiller number and grain weight per plant. The highest value for narrow sense heritability was achieved by panicle length

Tanggap Fisiologi Akar Sorgum (Sorghum Bicolor L. Moench) terhadap Cekaman Aluminium dan Defi Siensi Fosfor di dalam Rhizotron

<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> A study on physiological mechanism of sorghum to aluminum (Al) toxicity and phosphorous (P) defi  ciencies was conducted using several sorghum genotypes in rhizotron. The study was conducted in the greenhouse of the University Farm, Bogor Agricultural University from August  to October 2009.  The experiment was carried out as a Factorial experiment in a Completely Randomized Design with three replications. The fi  rst  factor was sorghum genotypes consisted of Numbu (tolerant) and B-75 (sensitive), and the second factor was combination of lime and phosphorous  fertilization consisted of: no lime-no P (R1), no lime-low P (R2), no lime-suffi  cient P (R3), lime-no P (R4), lime-low P (R5) and lime-suffi  cient P (R6). The results showed that all  variables were signifi  cantly affected by the interaction of  media and genotype, except for length of shoot and total P uptake.  Under low P and Al toxicity, sorghum variety Numbu showed a higher nutrient effi  ciency than B-75 with ability of forming greater  dry mass. The sensitive genotypes showed a higher nutrient uptake but a lower P  nutrient use efficiency under   Al toxicity and P defi ciency.  Total P uptake and P nutrient use effi  ciency were highly correlated with root growth and dry material accumulation

Keragaan Generasi Ketiga (M3) Kedelai Hasil Iradiasi Sinar Gamma Pada Kondisi Optimum Dan Kondisi Cekaman Kekeringan

The objective of this research was to obtain a genotype of selected putativemutant with good agronomic traits and high yielding on optimumcondition and its adaptability to drought stress in M3 generation. The studyresult showed that there were differences in the growth and production of eachpopulation as a result of irradiation in optimum conditions and drought stressconditions. Population as a result of irradiation at 150 Gy and 200 Gy had ahigher mean value for the plant height trait, the number of productive branches,the number of productive nodes and the number of productive pods compared toirradiation population of 50 Gy, 100 Gy and the control population of Argomulyoat optimum conditions. The decrease in the growth and development happened toall the characters observed in irradiation population in drought conditionscompared to when grown in optimum conditions. The decrease can be seen in thecharacters of plant height, number of pods and seed weight per plant. The growthand development of the population irradiation of 150 Gy and 200 Gy were moreinfluenced by drought conditions compared to other irradiation populations. Theselection in the optimum conditions produced 291 high yielding genotypes and theselection in drought conditions generated 202 genotypes and adapted to droughtenvironments