such novel idea is that of ing into the chromosomesof plants discrete genes that are not a part of the plants naturalconstitution：specifically，the idea of ing into nonleguminousplants the genes，if they can be identified and isolated，that fit theleguminous plants to be hosts for nitrogen-fixing bacteria. Hence，theintensified research on legumes.
這其中的一個新穎思想就是，在植物的染色體內注入並非是該植物自然構造一個部分的那些不相關聯的因基：具體而言，這一思想是，在非豆科植物內注入這樣一些基因，倘若這些基因可被辨識出來並被分離開來，而這些基因業已使豆科植物宜於充當那些具備固氮作用的細菌的寄主。由此，對豆科植物的.研究日趨深入。
is one of natures great ironies that the availability ofnitrogen in the soil frequently sets an upper limit on plant growtheven though the plants leaves are bathed in a sea of nitrogengas.下述情形真可謂是自然界的一個莫大諷刺：土壤中所能獲得的氮肥量往往對植物的生長構成了一個上限，雖然植物的葉子被沐浴在一片氮氣的海洋中。