PERUBAHAN FISIOLOGI DAN KANDUNGAN KLOROFIL SELAMA PEMASAKAN SERTA HUBUNGANNYA DENGAN VIABILITAS BENIH JARAK PAGAR (Jatropha curcas L.)

Hasanuddin Hasanuddin (Prodi Agroteknologi Fakultas Pertanian Universitas Syiah Kuala Darussalam Banda Aceh)
Halimursyadah Halimursyadah (Prodi Agroteknologi Fakultas Pertanian Universitas Syiah Kuala Darussalam Banda Aceh)
Trisda Kurniawan (Prodi Agroteknologi Fakultas Pertanian Universitas Syiah Kuala Darussalam Banda Aceh)

Jurnal Floratek
Vol 7, No 2 (2012)

The objectives of this research were to study physiological and chlorophyll changes during seed ripening and find quick parameters as indicators to determine seed physiological maturity level. A randomized completely block design with 5 treatments and 3 replications was used in this research. The treatments were (1) dark green fruit, 42 days after anthesis (DAA), (2) yellowish green fruit, 47 DAA, (3) fully green fruit, 52 DAA, (4) brownish yellow fruit, 57 DAA, and (5) dark brown fruit, 62 DAA. The results showed that jathropa seed was physiologically mature at 57 DAA with criteria: fruit color was brownish yellow, fruit skin was soft and easily hand-opened, and seed was black. These were also supported by seed dry weight, germination percentage, germination rate and first count germination. There were negative relationships between seed chlorophyll content and germination percentage, germination rate and first count germination.