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Phát triển phương pháp quang phổ phản xạ hồng ngoại gần (NIRS) cho các tính trạng liên quan đến chuyển đổi ethanol từ cỏ Napier (Pennisetum purpureum Schum.) có biến thiên gen
Tóm tắt
Cỏ Napier (Pennisetum purpureum Schum.) là một trong những nguồn nguyên liệu cho sản xuất sinh học và biofuel có năng suất cao nhất ở các khu vực bán nhiệt đới của Mỹ và thế giới. Ba mươi giống cỏ Napier với sự đa dạng di truyền đã được chọn từ một vườn ươm nguồn gen ở Tifton, GA và được phân tích về sợi, tro, nồng độ nitơ (N) và khả năng chuyển đổi sinh hóa thành ethanol. Một phương pháp hiệu chuẩn quang phổ phản xạ hồng ngoại gần (NIRS) đã được phát triển từ các mẫu vật này để dự đoán sản lượng ethanol, xylans, nồng độ N và tro bằng cách tách rời lá và thân và tương quan với các phân tích hóa học ướt. Sự đa dạng cao của mẫu vật từ các giống cây thấp với khả năng tiêu hóa lá và thân tốt đến các giống cỏ Napier cao hơn và năng suất hơn đã dẫn đến các tương quan cao với các kết quả dự đoán cho khả năng tiêu hóa chất khô trong ống nghiệm (r2 = 0.93), sợi tẩy trung tính (r2 = 0.83), sợi tẩy acid (r2 = 0.95), ethanol (r2 = 0.90), nitơ (r2 = 0.99), và tro (r2 = 0.98). Thông tin này sẽ cho phép đánh giá nhanh hơn về sinh khối cỏ Napier cho các ngành công nghiệp hoặc cho các nhà di truyền học.
Từ khóa
#Cỏ Napier #Pennisetum purpureum #quang phổ phản xạ hồng ngoại gần #chuyển đổi ethanol #di truyền họcTài liệu tham khảo
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