Bambang Suprihatno
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Analisis Lini X Tester untuk Hasil dan Komponen Hasil Lima Genotip Mandul Jantan Sitoplasmik-Genetik Padi , Satoto; Ridwan Setiamihardja; Bambang Suprihatno; Achmad Baihaki
Zuriat Vol 4, No 1 (1993)
Publisher : Breeding Science Society of Indonesia (BSSI) / PERIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/zuriat.v4i1.6635

Abstract

Lima genotip mandul jantan sitoplasmik-genetik disilangkan dengan lima kultivar pemulih kesuburan menurut metode  (5x4) lini x tester dengan tujuan untuk mengetahui daya gabung umum dan daya gabung khusus karakter hasil dan komponen hasil. Generasi F1 dievaluasi pada MK 1992 di Sukamandi dalam rancangan acak kelompok tiga ulangan. Analisis daya gabung menunjukkan adanya aksi gen non aditif yang berperan dalam pengendalian ekspresi karakter hasil, produktivitas per hari, persentase gabah hampa per malai, bobot 1000 butir, tinggi tanaman, umur masak; sedangkan pada jumlah gabah ini per malai gen-gen aditif yang lebih berperan. Di antara tetua-tetua, IR297448, IR628298, IR54, dan IR64 adalah penggabung-penggabung umum yang baik untuk hasil; sedangkan persilangan-persilangan yang menunjukkan daya gabung khusus tinggi adalah IR19774A/IR54, IR58025A/IR64, IR29744A/Sadang, dan IR62829A/Cimanuk. 
ANALISIS BIOMASSA DAN CADANGAN KARBON TANAMAN BAMBU BELANGKE (Gigantochloa pruriens) Bambang Suprihatno; Rasoel Hamidy; Bintal Amin
Jurnal Ilmu Lingkungan Vol 6, No 1 (2012): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.6.1.p.82-92

Abstract

The research was conducted from November 2011 to January 2012 in the mineral soil of Kebun Kayangan, PT Salim Ivomas Pratama to estimate the potential of carbon stock of the bamboo and to quantify the amount of carbon that can be absorbed by bamboo plants. Theresults of the research showed that carbon content of culm biomass from 50.68 to 54.87%(mean of 53.84%), leaf from 47.68 to 53.76% (mean of 51.47%) and twigs/branches from51,97 to 52,86 % (mean of 52.48%). The average of carbon content of the bamboo plantbiomass was 52.60%. Biomass obtained from the bamboo plants with different heights were145.07 g (1 m height), 461.33 g (3 m height), 834.79 g (5 m height), 999.24 g (7 m height),781.14 g (9 m height), 958.31 g (11 m height) and 1,925.67 g (12 m height). The average ofthe bamboo biomass was 872.22 g/individual. The potential of the bamboo biomass from23.47 to 29.82 t ha -1 with a mean of 26.30 t ha-1. Carbon stocks obtained from the bambooplants with different heights were 78.07 g C (1 m height), 248.04 g C (3 m height), 448.64 gC (5 m height), 541.68 g C (7 m height), 425.72 g C (9 m height), 519.67 g C (11 m height),1,029.79 g C (12 m height) and the average was 470.23 g C/individual. The potential ofcarbon stock of the bamboo ranged from 12.61 to 15.93 t C ha-1 with a mean of 14.08 t C ha -1. Total carbon stock in bamboo plantation were 52.55 t C ha-1, which was itemized asfollows : carbon stocks of bamboo 14.08 t C ha -1, under storey 0.11 t C ha-1, litter 2.83 t Cha-1 and soil 35.53 t C ha -1. Allometric equations to estimate of biomass according to high ofbamboo plant was Polynomial Y = - 520.31 + 684.62x – 113.76x2 + 6.0227x3 {Y = biomass(g) and x = plant height (m)}. Allometric equations to estimate carbon stock according tohigh of bamboo plant was Polynomial Y = - 274.64 + 362.45x – 59.81x2 + 3.1594x3 {Y =carbon stocks (g) and x = plant height (m)}.