Golden kiwis ... Zespri's SunGold kiwi strain is so valuable that its sprouts have been smuggled overseas and sold in lots for 60,000 New Zealand dollars. But how can a fruit be under copyright?

An curved arrow pointing right. New Zealand is the world's largest kiwi exporter, shipping out over $1 billion of fruit annually. But a little over a decade ago, a deadly plant disease called PSA ...