HISTO-CYTOLOGICA; CHANGES ACCOMPANIED BY THE FAILURE OF EMBRYOGENESIS UNDER HIGH TEMPERATURE CONDITIOM IN SNAP BEAN (Phaseolus vulgaris)

Dibawah kondisi temperature normal, sel telur telah terjasi pembelahan pada 1 DAA (day after anthesis) sehingga lebih dari dua embrio terdapat didalam embryo sac. Sel embrio ini dikelilingi oleh coenocytic endosperm dengan sederet sel nuclear diobservasi pad adaerah micropil. Sejumlah butiran pati menjadi lebih daripada 10 cel yang panjangnya mencapai 200 µm. Pada tahap perkembangan ini, embrio dapat dibedakan sebagai suspwnsor dan embryo proper. Embrio diobservasi berbentuk bulat pada 3 samapai 4 DAA. Dalam kondisi temperatur tinggi tidak didapatkan perubahan struktural yang khusus samapai 1 DAA. Volume ovul berkurang dibandingkan dengan control pada 2 DAA. Selain dari pada itu, sel telur yang takterbuahi dengan integument yang abnormal diobservasi pada 2 dan 3 DAA. Embrio yang kurang berkembang diobservasi baik pada cv. Haibushi maupun cv. Wonder fibawah kondisi temperature tinggi

FORMULATION OF TRICHODERMA VIRENS ORIGIN OF ACEH COCOA CONTROLLING BLACK POD DISEASE CAUSED BY PHYTOPHTORA PALMIVORA

Trichoderma virens have been isolated from rooting cocoa in Aceh and in the laboratory have been reported capable of inhibiting the growth of P. palmivora in vitro. However, the formulations of T. virens from Aceh can be used as an alternative product for farmers in controlling black pod disease of cocoa. This research was conducted t the Laboratory of Plant Pathology College of Agriculture Syiah Kuala University and cocoa fruit samples obtained from cocoa plantations owned by farmers in Pidie Jaya District of Aceh. The purpose of the study was to obtain an application formulations strains of T. virensfrom Aceh, as one of the biological control study consisted of seven treatments, namely W (water), Pest (Mancozeb Fungicide), Det (Detergent), Det+Tv( detergent+strainsof T.virens), P+Tv (Adhesive +strainsof T.virens), Co+Tv( Corn Oil+strainsof T.virens), Po+Tv (Palm oil+strainsof T.virens) and each treatment was repeated 10 times to obtain70 experimental units. The parameters observed incubation period, disease incidence (%), and the diameter of the spots (cm). Application results show that the strains of T. virens Origin Aceh effective in controlling P. palmivora on cocoa pods and the best  formulation in controlling P. palmivora on cocoa pods are corn oil+T. virens formulation (Co +Tv) compared with other formulations are characterized by the length of the incubation period, the low incidence of P. palmivora disease, and the small diameter of the spots on the cocoa pods

Host And Temperature Preferensce, Male Occurrence And Morfomentrics Offungivorous Nematode, Aphelenchus Avenae Isolates From Japan

ABSTRACT. Host and temperature preference, male accurrence, and morfomentrics of 39 isolates of Apehelenchus avenae were investigated. Of the 39 isolates, 33 were from 7 sistrict of Kyushu, 3 preference were investigated on 4 species of fungi; Botrytis cinerea, Rhizoctonia solani AG-4, Fusarium oxysporum f. sp. Melonis, and Pyitum aphanidermatum growing on 1/5 strength PDA medium. The nematodes were incubated on respective fungus mat for 30 days at 25 and 30 OC host fungi and temperatures gave rise to various levels of reproduction and male accurance. The isolates were divided into 5 groups based on their reproductivity on their host fungi at the 2 temperature regimes. Most of the isolates of A. avenae progated themselves at 25 0C on B. cinera and R. solani AG-4, was 60.850 given by Nagasaki isolates (NA3). The maximum multiplication 48.420 at 0C accured on R. solani byu Kagoshima isiolate (KA3). The occurrence of males was very low in all isolates and it occurred only at 30 0C. De Man’s value of body dimension were measured and showed no significant variation among the isolates. Besides, There were no realtions between groupings by host preference and by body dimension

Host And Temperature Preferensce, Male Occurrence And Morfomentrics Offungivorous Nematode, Aphelenchus Avenae Isolates From Japan

ABSTRACT. Host and temperature preference, male accurrence, and morfomentrics of 39 isolates of Apehelenchus avenae were investigated. Of the 39 isolates, 33 were from 7 sistrict of Kyushu, 3 preference were investigated on 4 species of fungi; Botrytis cinerea, Rhizoctonia solani AG-4, Fusarium oxysporum f. sp. Melonis, and Pyitum aphanidermatum growing on 1/5 strength PDA medium. The nematodes were incubated on respective fungus mat for 30 days at 25 and 30 OC host fungi and temperatures gave rise to various levels of reproduction and male accurance. The isolates were divided into 5 groups based on their reproductivity on their host fungi at the 2 temperature regimes. Most of the isolates of A. avenae progated themselves at 25 0C on B. cinera and R. solani AG-4, was 60.850 given by Nagasaki isolates (NA3). The maximum multiplication 48.420 at 0C accured on R. solani byu Kagoshima isiolate (KA3). The occurrence of males was very low in all isolates and it occurred only at 30 0C. De Man’s value of body dimension were measured and showed no significant variation among the isolates. Besides, There were no realtions between groupings by host preference and by body dimension

Efisiensi Penggunaan Faktor Produksi Usaha Tani Wortel Di Kecamatan Bandar, Kabupaten Aceh Tengah

ABSTRACT. The prospect of carrot farmusines in Bndar subdistrict, Aceh Tengah District very good. Beside of agroclimatology in vegetable production center, can be positive impact to the income farmer increasing, good nutrition of the people, chance of labor and agribusiness. The commodity market fot this commodity very big, but the price still lower. This condition occurred because of allocation production factor in this farbussines not efficient

Averaging and Bifurcation in Symmetric Systems

ilus. ; tab. ; 29 cm

Resistensi buah beberapa kultivar pisang terhadap isolat Virulen dari Colletotrichum muse penyebab penyakit Antraknosa

iii+25hlm.;29c

Potensi Glioclladium roseum sebagai herbisida Pre-Emergence pada Gulma yang Berasosiasi dengan tanaman kedelai ( Glycine max, L. (Merrill)

VIII+15hlm.;29c

Pengembangan biological seed treament untuk pengendalian phytophthora pada cabai merah (Capsicum annuum L.)

IX+999hlm.;29c