160. 菟丝子搞残西红柿
P1:describe the dodder and effect
・acquire the nutrients and water from other planets, stunting their growth but not killing them
・one of the dodder belongs to tomato, reducing 4million yields
P2:describe how the researchers find dodder grows toward which planets
・set various targets and find: moist soil and color light don’t attract the seedlings
・but young tomato and its perfume attract
・to minimize →connect with pipe
・grow toward impatiens and tomato, wheat won’t sustain dodder well and have the parasite
P3:what ingredients attract dodder, and how about wheat
・3 attract
・one of the attractant show up in wheat, but wheat have another substance repel the seedlings