。
The tree bowed under the weight of the fruit alone.
Literal
Tree [topic-は] fruit [only-のみ] [possessive-の] weight [with-で] sagged.
のみ is a written/formal equivalent of だけ ('only'). It attaches to nouns with less colloquial warmth — encountered much more in essays and official prose than in speech. たわむ ('to bend, to sag') is the verb for something elastic bending under weight — branches, boards, springs. で here is causal — 'because of the weight.'