ਪਤੇ ਕਿਨਾਰਿਅਾ ਤੋ ਸੁਕ ਰਹੇ ਨੇ

Looks like Thrips Powdery Mildew attack. Also growth restricted due to low temperature. Carryout following measures 1. Give irrigation at night. 2. Carryout spray of Sulfur both for controlling Powdery Mildew and to increase temperature.