Australia train for first Test with question mark over fitness of Steve Smith and Cameroon Green - in pictures

Hosts hope to field star batsman and young all-rounder in Adelaide Test against India

Australia batsman Steve Smith left training early due to back soreness at the Adelaide Oval. Getty

Steve Smith is expected to play in the first Test against India in Adelaide onThursday. Getty

All-rounder Cameron Green will make his Test debut for Australia if he recovers from concussion. Getty

Cameron Green is rated very highly for his all-round skills. Getty

Pat Cummins of Australia plays rugby during an Australian nets session at the Adelaide Oval. Getty

Australia coach Justin Langer with opening batsman Joe Burns. Getty

Marnus Labuschagne is likely to bat at number three for Australia. Getty

Marcus Harris during Australia's nets session at the Adelaide Oval. Getty

India's captain Virat Kohli leaves after a training session at the Adelaide Oval. AFP

India spinner Ravichandran Ashwin during training in Adelaide. AFP

Virat Kohli does stretching exercises during a training session at the Adelaide Oval. AFP

India fast bowler Mohammed Siraj during training in Adelaide. AFP

India spinner Kuldeep Yadav after batting during a training session. Getty

India's Cheteshwar Pujara trains in Adelaide. AFP

Virat Kohli inspects the Adelaide pitch. AFP

Australia will be waiting anxiously on the fitness of batting mainstay Steve Smith and young all-rounder Cameroon Green as they gear up for the first of four Tests against India.

Green, 21, will make his Test debut against India in the first game of the series in Adelaide on Thursday if he comes through concussion protocols, Australia coach Justin Langer said.

Green was struck on the head when bowling to Jasprit Bumrah last week in an Australia 'A' game and replaced under the sport's concussion rules.

Green is expected to train with the Australia squad over the next two days and undergo testing for any lingering symptoms ahead of the day-night match.

"If he's passed fit he'll definitely play," Langer said. "We're just going through the concussion protocols.

"If Cameron gets through the protocols and he gets through training and he feels good ... he'll make his Test debut, which is very, very exciting for Australian cricket, for him and his family."

The hosts are also awaiting news on the fitness of star batsman Smith who missed Tuesday's training with lower-back soreness.

An Australian team spokesman said Smith was not in risk of missing the opening Test and was expected to attend practice on Wednesday.

Langer said that the selection of the opening batsmen was proving to be one of the harder decisions he faced ahead of the Test, with David Warner and Will Pucovski out injured and Joe Burns out of form.

Langer was still keen on Burns taking the role and he would be watched closely at training over the next two days. There was no suggestion that Marnus Labuschagne would be elevated from his usual No 3 position, though Matthew Wade could be used as a makeshift opener, Langer added.