main idea: dodder stuns the growth of tomato and potential way to repel it
structure:
p1. dodder is among the worst weeds in us and the reason
- stun the growth but don't kill the plants
- to survive, latch on to the victim within 1 week
-economic loss: 4mios dollars of reduced yields
p2. researchers use volatile compounds to test which of them is attractant
- compounds of tomato attract it
-first stage: set various targets several centimeters from Dodder sprouts
-second stage, use curved pipes
p3. 3 out of 7 compounds attract dodder and potential way to control it
-also 1 compound exists in wheat, while another one repel it and can be a optional material to fight it
new words:
sprout: 抽条,发芽
shoot out: 伸出
tap for: 索取
bedevil: 使得痛苦
a pot of moist soil: 一盆微微湿润的土壤
dyed water: 被染色的水
vial: 小瓶
confounding: 使混淆的
curving pipes: 弯管
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