Halimursyadah Halimursyadah
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Journal : Jurnal Floratek

PENGGUNAAN POLYETHYLENE GLYCOLE SEBAGAI MEDIA SIMULASI CEKAMAN KEKERINGAN TERHADAP VIABILITAS DAN VIGOR BEBERAPA VARIETAS BENIH KACANG TANAH (Arachis hypogaea L.) PADA STADIA PERKECAMBAHAN Halimursyadah Halimursyadah; Agam Ihsan Hereri; Aira Hafnizar
Jurnal Floratek Vol 8, No 2 (2013): Oktober 2013
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

This study was aimed at determining peanut varieties that are tolerant to drought stress and assessing the effectiveness of the use of PEG 4000 as a media simulation to drought stress.  Experiment was arranged in a Completely Randomized Design (CRD) factorial 4 x 4, repeated three times. First factor was variety, consisted of four levels, namely Tuban, Bima, Bison and Local Aceh. Second factor was PEG concentration, consisted of 4 levels, namely control, 3.5%, 11.6%, and 18.1%. Variables measured were maximum growth potential, germination rate, relative growth rate, vigor index, germination value, root length, hypocotyl length, and seedling dry weight.  The results showed that varieties exerted significant effects on maximum growth potential, germination rate, relative growth rate, root length, and hypocotyl length. PEG concentration exerted significant effects on maximum growth potential, germination rate, growth velocity, relative vigor index, germination value, root length, hypocotyl length, and seedling dry weight. There were interactions between varieties and PEG concentration on relative growth rate, root length, and hypocotyl length of groundnut seeds. Local variety of Aceh was recommended as a tolerant variety to drought stress.  Bison was not tolerant to drought stress. Bima was recommended as a moderate tolerant variety to drought, while Tuban was a tolerant variety to drought.
PENGARUH PEMBERIAN SENYAWA ANTIOKSIDAN SEBELUM SIMPAN TERHADAP UMUR SIMPAN BENIH KAPAS (Gossypium hirsutum L.) Halimursyadah Halimursyadah
Jurnal Floratek Vol 3, No 1 (2008)
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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The effect of antioxidants  as pre-storage treatment to expand the cotton seed storage period Halimursyadah1 dan Endang Murniati2 1Fakultas Pertanian Unsyiah, Nanggroe Aceh Darussalam2Fakultas Pertanian Institut Pertanian Bogor,Bogor ABSTRACTCotton (Gossypium hirsutum L.) seeds ‘Kanesia 8’ were treated with antioxidants to maintain viability and vigor during ageing.  Antioxidants which were used are α-tocopherol and extract of red fruit) dissolved in acetone, ascorbic acid dissolved in water also.   Seeds were stored at 70-80% relative humidity and 28-29ºC for 12 weeks.  Periodically, viability and vigor were determined.  Seed viability and vigor were estimated by percentage germination, speed of germination, T50, and Index of vigor.  Seeds treated with α-tocopherol 150 ppm showed the highest viability and vigor during the ageing period, while ascorbic acid 300 ppm also retarded the rate of ageing.  Treating seeds with red fruits showed the highest of T50.  The ability of α-tocopherol, ascorbic acid and red fruit to reduce viability and vigor loss of stored cotton seeds may be due to their ability to inhibit lipid peroxidation.      
PERUBAHAN ANATOMI DAN KANDUNGAN OLIGOSAKARIDA PADA BENIH REKALSITRAN Avicennia marina AKIBAT PERBEDAAN LAJU PENGERINGAN Halimursyadah Halimursyadah
Jurnal Floratek Vol 5, No 1 (2010)
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

ABSTRACT The objective of this study was to evaluate anatomical changes and oligosaccharide content of recalcitrant seed Avicennia marina at various drying rate i.e. fast, medium and slow drying.  Oligosaccharide content was determined, and anatomical embryonic axes was observed at various times during desiccation. The result showed that moisture content of  A. marina seed was 60.75-64.67% at shedding. The highest ratio of (raffinose + stachyose) / sucrose was 0.41, indicating that embryonic axes were more tolerant to desiccation than cotyledon.   Anatomical observation of embryonic axes showed that there was radicle damage due to  medium and slow drying treatment.